257424880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:227

約数の個数: 160

約数和(自身を含む): 672546240

約数和(自身を除く): 415121360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 34, 40, 58, 61, 68, 80, 85, 107, 116, 122, 136, 145, 170, 214, 232, 244, 272, 290, 305, 340, 428, 464, 488, 493, 535, 580, 610, 680, 856, 976, 986, 1037, 1070, 1160, 1220, 1360, 1712, 1769, 1819, 1972, 2074, 2140, 2320, 2440, 2465, 3103, 3538, 3638, 3944, 4148, 4280, 4880, 4930, 5185, 6206, 6527, 7076, 7276, 7888, 8296, 8560, 8845, 9095, 9860, 10370, 12412, 13054, 14152, 14552, 15515, 16592, 17690, 18190, 19720, 20740, 24824, 26108, 28304, 29104, 30073, 31030, 32635, 35380, 36380, 39440, 41480, 49648, 52216, 52751, 60146, 62060, 65270, 70760, 72760, 82960, 104432, 105502, 110959, 120292, 124120, 130540, 141520, 145520, 150365, 189283, 211004, 221918, 240584, 248240, 261080, 263755, 300730, 378566, 422008, 443836, 481168, 522160, 527510, 554795, 601460, 757132, 844016, 887672, 946415, 1055020, 1109590, 1202920, 1514264, 1775344, 1892830, 2110040, 2219180, 2405840, 3028528, 3217811, 3785660, 4220080, 4438360, 6435622, 7571320, 8876720, 12871244, 15142640, 16089055, 25742488, 32178110, 51484976, 64356220, 128712440, 257424880]

約数ペア:

[(1, 257424880), (2, 128712440), (4, 64356220), (5, 51484976), (8, 32178110), (10, 25742488), (16, 16089055), (17, 15142640), (20, 12871244), (29, 8876720), (34, 7571320), (40, 6435622), (58, 4438360), (61, 4220080), (68, 3785660), (80, 3217811), (85, 3028528), (107, 2405840), (116, 2219180), (122, 2110040), (136, 1892830), (145, 1775344), (170, 1514264), (214, 1202920), (232, 1109590), (244, 1055020), (272, 946415), (290, 887672), (305, 844016), (340, 757132), (428, 601460), (464, 554795), (488, 527510), (493, 522160), (535, 481168), (580, 443836), (610, 422008), (680, 378566), (856, 300730), (976, 263755), (986, 261080), (1037, 248240), (1070, 240584), (1160, 221918), (1220, 211004), (1360, 189283), (1712, 150365), (1769, 145520), (1819, 141520), (1972, 130540), (2074, 124120), (2140, 120292), (2320, 110959), (2440, 105502), (2465, 104432), (3103, 82960), (3538, 72760), (3638, 70760), (3944, 65270), (4148, 62060), (4280, 60146), (4880, 52751), (4930, 52216), (5185, 49648), (6206, 41480), (6527, 39440), (7076, 36380), (7276, 35380), (7888, 32635), (8296, 31030), (8560, 30073), (8845, 29104), (9095, 28304), (9860, 26108), (10370, 24824), (12412, 20740), (13054, 19720), (14152, 18190), (14552, 17690), (15515, 16592)]