821485730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{1123}}^1$

素因数の和:1491

約数の個数: 64

約数和(自身を含む): 1692690048

約数和(自身を除く): 871204318

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 331, 442, 662, 1105, 1123, 1655, 2210, 2246, 3310, 4303, 5615, 5627, 8606, 11230, 11254, 14599, 19091, 21515, 28135, 29198, 38182, 43030, 56270, 72995, 73151, 95455, 145990, 146302, 190910, 248183, 365755, 371713, 496366, 731510, 743426, 1240915, 1858565, 2481830, 3717130, 4832269, 6319121, 9664538, 12638242, 24161345, 31595605, 48322690, 63191210, 82148573, 164297146, 410742865, 821485730]

約数ペア:

[(1, 821485730), (2, 410742865), (5, 164297146), (10, 82148573), (13, 63191210), (17, 48322690), (26, 31595605), (34, 24161345), (65, 12638242), (85, 9664538), (130, 6319121), (170, 4832269), (221, 3717130), (331, 2481830), (442, 1858565), (662, 1240915), (1105, 743426), (1123, 731510), (1655, 496366), (2210, 371713), (2246, 365755), (3310, 248183), (4303, 190910), (5615, 146302), (5627, 145990), (8606, 95455), (11230, 73151), (11254, 72995), (14599, 56270), (19091, 43030), (21515, 38182), (28135, 29198)]