399314720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^2\times {\mathrm{53}}^1$

素因数の和:144

約数の個数: 216

約数和(自身を含む): 1155339612

約数和(自身を除く): 756024892

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 53, 56, 62, 70, 80, 98, 106, 112, 124, 140, 155, 160, 196, 212, 217, 224, 245, 248, 265, 280, 310, 371, 392, 424, 434, 490, 496, 530, 560, 620, 742, 784, 848, 868, 961, 980, 992, 1060, 1085, 1120, 1240, 1484, 1519, 1568, 1643, 1696, 1736, 1855, 1922, 1960, 2120, 2170, 2480, 2597, 2968, 3038, 3286, 3472, 3710, 3844, 3920, 4240, 4340, 4805, 4960, 5194, 5936, 6076, 6572, 6727, 6944, 7420, 7595, 7688, 7840, 8215, 8480, 8680, 9610, 10388, 11501, 11872, 12152, 12985, 13144, 13454, 14840, 15190, 15376, 16430, 17360, 19220, 20776, 23002, 24304, 25970, 26288, 26908, 29680, 30380, 30752, 32860, 33635, 34720, 38440, 41552, 46004, 47089, 48608, 50933, 51940, 52576, 53816, 57505, 59360, 60760, 65720, 67270, 76880, 80507, 83104, 92008, 94178, 101866, 103880, 107632, 115010, 121520, 131440, 134540, 153760, 161014, 184016, 188356, 203732, 207760, 215264, 230020, 235445, 243040, 254665, 262880, 269080, 322028, 356531, 368032, 376712, 402535, 407464, 415520, 460040, 470890, 509330, 538160, 644056, 713062, 753424, 805070, 814928, 920080, 941780, 1018660, 1076320, 1288112, 1426124, 1506848, 1610140, 1629856, 1782655, 1840160, 1883560, 2037320, 2495717, 2576224, 2852248, 3220280, 3565310, 3767120, 4074640, 4991434, 5704496, 6440560, 7130620, 7534240, 8149280, 9982868, 11408992, 12478585, 12881120, 14261240, 19965736, 24957170, 28522480, 39931472, 49914340, 57044960, 79862944, 99828680, 199657360, 399314720]

約数ペア:

[(1, 399314720), (2, 199657360), (4, 99828680), (5, 79862944), (7, 57044960), (8, 49914340), (10, 39931472), (14, 28522480), (16, 24957170), (20, 19965736), (28, 14261240), (31, 12881120), (32, 12478585), (35, 11408992), (40, 9982868), (49, 8149280), (53, 7534240), (56, 7130620), (62, 6440560), (70, 5704496), (80, 4991434), (98, 4074640), (106, 3767120), (112, 3565310), (124, 3220280), (140, 2852248), (155, 2576224), (160, 2495717), (196, 2037320), (212, 1883560), (217, 1840160), (224, 1782655), (245, 1629856), (248, 1610140), (265, 1506848), (280, 1426124), (310, 1288112), (371, 1076320), (392, 1018660), (424, 941780), (434, 920080), (490, 814928), (496, 805070), (530, 753424), (560, 713062), (620, 644056), (742, 538160), (784, 509330), (848, 470890), (868, 460040), (961, 415520), (980, 407464), (992, 402535), (1060, 376712), (1085, 368032), (1120, 356531), (1240, 322028), (1484, 269080), (1519, 262880), (1568, 254665), (1643, 243040), (1696, 235445), (1736, 230020), (1855, 215264), (1922, 207760), (1960, 203732), (2120, 188356), (2170, 184016), (2480, 161014), (2597, 153760), (2968, 134540), (3038, 131440), (3286, 121520), (3472, 115010), (3710, 107632), (3844, 103880), (3920, 101866), (4240, 94178), (4340, 92008), (4805, 83104), (4960, 80507), (5194, 76880), (5936, 67270), (6076, 65720), (6572, 60760), (6727, 59360), (6944, 57505), (7420, 53816), (7595, 52576), (7688, 51940), (7840, 50933), (8215, 48608), (8480, 47089), (8680, 46004), (9610, 41552), (10388, 38440), (11501, 34720), (11872, 33635), (12152, 32860), (12985, 30752), (13144, 30380), (13454, 29680), (14840, 26908), (15190, 26288), (15376, 25970), (16430, 24304), (17360, 23002), (19220, 20776)]