256916800

素因数分解:

$2^6\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:178

約数の個数: 252

約数和(自身を含む): 767478780

約数和(自身を除く): 510561980

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 29, 32, 35, 40, 49, 50, 56, 58, 64, 70, 80, 98, 100, 112, 113, 116, 140, 145, 160, 175, 196, 200, 203, 224, 226, 232, 245, 280, 290, 320, 350, 392, 400, 406, 448, 452, 464, 490, 560, 565, 580, 700, 725, 784, 791, 800, 812, 904, 928, 980, 1015, 1120, 1130, 1160, 1225, 1400, 1421, 1450, 1568, 1582, 1600, 1624, 1808, 1856, 1960, 2030, 2240, 2260, 2320, 2450, 2800, 2825, 2842, 2900, 3136, 3164, 3248, 3277, 3616, 3920, 3955, 4060, 4520, 4640, 4900, 5075, 5537, 5600, 5650, 5684, 5800, 6328, 6496, 6554, 7105, 7232, 7840, 7910, 8120, 9040, 9280, 9800, 10150, 11074, 11200, 11300, 11368, 11600, 12656, 12992, 13108, 14210, 15680, 15820, 16240, 16385, 18080, 19600, 19775, 20300, 22148, 22600, 22736, 22939, 23200, 25312, 26216, 27685, 28420, 31640, 32480, 32770, 35525, 36160, 39200, 39550, 40600, 44296, 45200, 45472, 45878, 46400, 50624, 52432, 55370, 56840, 63280, 64960, 65540, 71050, 78400, 79100, 81200, 81925, 88592, 90400, 90944, 91756, 104864, 110740, 113680, 114695, 126560, 131080, 138425, 142100, 158200, 160573, 162400, 163850, 177184, 180800, 183512, 209728, 221480, 227360, 229390, 253120, 262160, 276850, 284200, 316400, 321146, 324800, 327700, 354368, 367024, 442960, 454720, 458780, 524320, 553700, 568400, 573475, 632800, 642292, 655400, 734048, 802865, 885920, 917560, 1048640, 1107400, 1136800, 1146950, 1265600, 1284584, 1310800, 1468096, 1605730, 1771840, 1835120, 2214800, 2273600, 2293900, 2569168, 2621600, 3211460, 3670240, 4014325, 4429600, 4587800, 5138336, 5243200, 6422920, 7340480, 8028650, 8859200, 9175600, 10276672, 12845840, 16057300, 18351200, 25691680, 32114600, 36702400, 51383360, 64229200, 128458400, 256916800]

約数ペア:

[(1, 256916800), (2, 128458400), (4, 64229200), (5, 51383360), (7, 36702400), (8, 32114600), (10, 25691680), (14, 18351200), (16, 16057300), (20, 12845840), (25, 10276672), (28, 9175600), (29, 8859200), (32, 8028650), (35, 7340480), (40, 6422920), (49, 5243200), (50, 5138336), (56, 4587800), (58, 4429600), (64, 4014325), (70, 3670240), (80, 3211460), (98, 2621600), (100, 2569168), (112, 2293900), (113, 2273600), (116, 2214800), (140, 1835120), (145, 1771840), (160, 1605730), (175, 1468096), (196, 1310800), (200, 1284584), (203, 1265600), (224, 1146950), (226, 1136800), (232, 1107400), (245, 1048640), (280, 917560), (290, 885920), (320, 802865), (350, 734048), (392, 655400), (400, 642292), (406, 632800), (448, 573475), (452, 568400), (464, 553700), (490, 524320), (560, 458780), (565, 454720), (580, 442960), (700, 367024), (725, 354368), (784, 327700), (791, 324800), (800, 321146), (812, 316400), (904, 284200), (928, 276850), (980, 262160), (1015, 253120), (1120, 229390), (1130, 227360), (1160, 221480), (1225, 209728), (1400, 183512), (1421, 180800), (1450, 177184), (1568, 163850), (1582, 162400), (1600, 160573), (1624, 158200), (1808, 142100), (1856, 138425), (1960, 131080), (2030, 126560), (2240, 114695), (2260, 113680), (2320, 110740), (2450, 104864), (2800, 91756), (2825, 90944), (2842, 90400), (2900, 88592), (3136, 81925), (3164, 81200), (3248, 79100), (3277, 78400), (3616, 71050), (3920, 65540), (3955, 64960), (4060, 63280), (4520, 56840), (4640, 55370), (4900, 52432), (5075, 50624), (5537, 46400), (5600, 45878), (5650, 45472), (5684, 45200), (5800, 44296), (6328, 40600), (6496, 39550), (6554, 39200), (7105, 36160), (7232, 35525), (7840, 32770), (7910, 32480), (8120, 31640), (9040, 28420), (9280, 27685), (9800, 26216), (10150, 25312), (11074, 23200), (11200, 22939), (11300, 22736), (11368, 22600), (11600, 22148), (12656, 20300), (12992, 19775), (13108, 19600), (14210, 18080), (15680, 16385), (15820, 16240)]