51680440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{487}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 133516800

約数和(自身を除く): 81836360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 379, 487, 758, 974, 1516, 1895, 1948, 2435, 2653, 3032, 3409, 3790, 3896, 4870, 5306, 6818, 7580, 9740, 10612, 13265, 13636, 15160, 17045, 19480, 21224, 26530, 27272, 34090, 53060, 68180, 106120, 136360, 184573, 369146, 738292, 922865, 1292011, 1476584, 1845730, 2584022, 3691460, 5168044, 6460055, 7382920, 10336088, 12920110, 25840220, 51680440]

約数ペア:

[(1, 51680440), (2, 25840220), (4, 12920110), (5, 10336088), (7, 7382920), (8, 6460055), (10, 5168044), (14, 3691460), (20, 2584022), (28, 1845730), (35, 1476584), (40, 1292011), (56, 922865), (70, 738292), (140, 369146), (280, 184573), (379, 136360), (487, 106120), (758, 68180), (974, 53060), (1516, 34090), (1895, 27272), (1948, 26530), (2435, 21224), (2653, 19480), (3032, 17045), (3409, 15160), (3790, 13636), (3896, 13265), (4870, 10612), (5306, 9740), (6818, 7580)]