257813360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{14851}}^1$

素因数の和:14902

約数の個数: 80

約数和(自身を含む): 707192832

約数和(自身を除く): 449379472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 4340, 8680, 14851, 17360, 29702, 59404, 74255, 103957, 118808, 148510, 207914, 237616, 297020, 415828, 460381, 519785, 594040, 831656, 920762, 1039570, 1188080, 1663312, 1841524, 2079140, 2301905, 3222667, 3683048, 4158280, 4603810, 6445334, 7366096, 8316560, 9207620, 12890668, 16113335, 18415240, 25781336, 32226670, 36830480, 51562672, 64453340, 128906680, 257813360]

約数ペア:

[(1, 257813360), (2, 128906680), (4, 64453340), (5, 51562672), (7, 36830480), (8, 32226670), (10, 25781336), (14, 18415240), (16, 16113335), (20, 12890668), (28, 9207620), (31, 8316560), (35, 7366096), (40, 6445334), (56, 4603810), (62, 4158280), (70, 3683048), (80, 3222667), (112, 2301905), (124, 2079140), (140, 1841524), (155, 1663312), (217, 1188080), (248, 1039570), (280, 920762), (310, 831656), (434, 594040), (496, 519785), (560, 460381), (620, 415828), (868, 297020), (1085, 237616), (1240, 207914), (1736, 148510), (2170, 118808), (2480, 103957), (3472, 74255), (4340, 59404), (8680, 29702), (14851, 17360)]