51293240

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18061}}^1$

素因数の和:18143

約数の個数: 32

約数和(自身を含む): 117041760

約数和(自身を除く): 65748520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 18061, 36122, 72244, 90305, 144488, 180610, 361220, 722440, 1282331, 2564662, 5129324, 6411655, 10258648, 12823310, 25646620, 51293240]

約数ペア:

[(1, 51293240), (2, 25646620), (4, 12823310), (5, 10258648), (8, 6411655), (10, 5129324), (20, 2564662), (40, 1282331), (71, 722440), (142, 361220), (284, 180610), (355, 144488), (568, 90305), (710, 72244), (1420, 36122), (2840, 18061)]