20967160

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 50123520

約数和(自身を除く): 29156360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 457, 620, 740, 914, 1147, 1240, 1480, 1828, 2285, 2294, 3656, 4570, 4588, 5735, 9140, 9176, 11470, 14167, 16909, 18280, 22940, 28334, 33818, 45880, 56668, 67636, 70835, 84545, 113336, 135272, 141670, 169090, 283340, 338180, 524179, 566680, 676360, 1048358, 2096716, 2620895, 4193432, 5241790, 10483580, 20967160]

約数ペア:

[(1, 20967160), (2, 10483580), (4, 5241790), (5, 4193432), (8, 2620895), (10, 2096716), (20, 1048358), (31, 676360), (37, 566680), (40, 524179), (62, 338180), (74, 283340), (124, 169090), (148, 141670), (155, 135272), (185, 113336), (248, 84545), (296, 70835), (310, 67636), (370, 56668), (457, 45880), (620, 33818), (740, 28334), (914, 22940), (1147, 18280), (1240, 16909), (1480, 14167), (1828, 11470), (2285, 9176), (2294, 9140), (3656, 5735), (4570, 4588)]