646335160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{853}}^1\times {\mathrm{997}}^1$

素因数の和:1880

約数の個数: 64

約数和(自身を含む): 1534125600

約数和(自身を除く): 887790440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 853, 997, 1706, 1994, 3412, 3988, 4265, 4985, 6824, 7976, 8530, 9970, 16207, 17060, 18943, 19940, 32414, 34120, 37886, 39880, 64828, 75772, 81035, 94715, 129656, 151544, 162070, 189430, 324140, 378860, 648280, 757720, 850441, 1700882, 3401764, 4252205, 6803528, 8504410, 16158379, 17008820, 32316758, 34017640, 64633516, 80791895, 129267032, 161583790, 323167580, 646335160]

約数ペア:

[(1, 646335160), (2, 323167580), (4, 161583790), (5, 129267032), (8, 80791895), (10, 64633516), (19, 34017640), (20, 32316758), (38, 17008820), (40, 16158379), (76, 8504410), (95, 6803528), (152, 4252205), (190, 3401764), (380, 1700882), (760, 850441), (853, 757720), (997, 648280), (1706, 378860), (1994, 324140), (3412, 189430), (3988, 162070), (4265, 151544), (4985, 129656), (6824, 94715), (7976, 81035), (8530, 75772), (9970, 64828), (16207, 39880), (17060, 37886), (18943, 34120), (19940, 32414)]