51563540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^2$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 128927232

約数和(自身を除く): 77363692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 109, 124, 140, 155, 217, 218, 310, 434, 436, 545, 620, 763, 868, 1085, 1090, 1526, 2170, 2180, 3052, 3379, 3815, 4340, 6758, 7630, 11881, 13516, 15260, 16895, 23653, 23762, 33790, 47306, 47524, 59405, 67580, 83167, 94612, 118265, 118810, 166334, 236530, 237620, 332668, 368311, 415835, 473060, 736622, 831670, 1473244, 1663340, 1841555, 2578177, 3683110, 5156354, 7366220, 10312708, 12890885, 25781770, 51563540]

約数ペア:

[(1, 51563540), (2, 25781770), (4, 12890885), (5, 10312708), (7, 7366220), (10, 5156354), (14, 3683110), (20, 2578177), (28, 1841555), (31, 1663340), (35, 1473244), (62, 831670), (70, 736622), (109, 473060), (124, 415835), (140, 368311), (155, 332668), (217, 237620), (218, 236530), (310, 166334), (434, 118810), (436, 118265), (545, 94612), (620, 83167), (763, 67580), (868, 59405), (1085, 47524), (1090, 47306), (1526, 33790), (2170, 23762), (2180, 23653), (3052, 16895), (3379, 15260), (3815, 13516), (4340, 11881), (6758, 7630)]