643958140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{227}}^1\times {\mathrm{881}}^1$

素因数の和:1147

約数の個数: 96

約数和(自身を含む): 1621638144

約数和(自身を除く): 977680004

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 227, 230, 322, 454, 460, 644, 805, 881, 908, 1135, 1589, 1610, 1762, 2270, 3178, 3220, 3524, 4405, 4540, 5221, 6167, 6356, 7945, 8810, 10442, 12334, 15890, 17620, 20263, 20884, 24668, 26105, 30835, 31780, 36547, 40526, 52210, 61670, 73094, 81052, 101315, 104420, 123340, 141841, 146188, 182735, 199987, 202630, 283682, 365470, 399974, 405260, 567364, 709205, 730940, 799948, 999935, 1399909, 1418410, 1999870, 2799818, 2836820, 3999740, 4599701, 5599636, 6999545, 9199402, 13999090, 18398804, 22998505, 27998180, 32197907, 45997010, 64395814, 91994020, 128791628, 160989535, 321979070, 643958140]

約数ペア:

[(1, 643958140), (2, 321979070), (4, 160989535), (5, 128791628), (7, 91994020), (10, 64395814), (14, 45997010), (20, 32197907), (23, 27998180), (28, 22998505), (35, 18398804), (46, 13999090), (70, 9199402), (92, 6999545), (115, 5599636), (140, 4599701), (161, 3999740), (227, 2836820), (230, 2799818), (322, 1999870), (454, 1418410), (460, 1399909), (644, 999935), (805, 799948), (881, 730940), (908, 709205), (1135, 567364), (1589, 405260), (1610, 399974), (1762, 365470), (2270, 283682), (3178, 202630), (3220, 199987), (3524, 182735), (4405, 146188), (4540, 141841), (5221, 123340), (6167, 104420), (6356, 101315), (7945, 81052), (8810, 73094), (10442, 61670), (12334, 52210), (15890, 40526), (17620, 36547), (20263, 31780), (20884, 30835), (24668, 26105)]