81030640

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{659}}^1$

素因数の和:754

約数の個数: 80

約数和(自身を含む): 198871200

約数和(自身を除く): 117840560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 53, 58, 80, 106, 116, 145, 212, 232, 265, 290, 424, 464, 530, 580, 659, 848, 1060, 1160, 1318, 1537, 2120, 2320, 2636, 3074, 3295, 4240, 5272, 6148, 6590, 7685, 10544, 12296, 13180, 15370, 19111, 24592, 26360, 30740, 34927, 38222, 52720, 61480, 69854, 76444, 95555, 122960, 139708, 152888, 174635, 191110, 279416, 305776, 349270, 382220, 558832, 698540, 764440, 1012883, 1397080, 1528880, 2025766, 2794160, 4051532, 5064415, 8103064, 10128830, 16206128, 20257660, 40515320, 81030640]

約数ペア:

[(1, 81030640), (2, 40515320), (4, 20257660), (5, 16206128), (8, 10128830), (10, 8103064), (16, 5064415), (20, 4051532), (29, 2794160), (40, 2025766), (53, 1528880), (58, 1397080), (80, 1012883), (106, 764440), (116, 698540), (145, 558832), (212, 382220), (232, 349270), (265, 305776), (290, 279416), (424, 191110), (464, 174635), (530, 152888), (580, 139708), (659, 122960), (848, 95555), (1060, 76444), (1160, 69854), (1318, 61480), (1537, 52720), (2120, 38222), (2320, 34927), (2636, 30740), (3074, 26360), (3295, 24592), (4240, 19111), (5272, 15370), (6148, 13180), (6590, 12296), (7685, 10544)]