81220700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1571}}^1$

素因数の和:1643

約数の個数: 72

約数和(自身を含む): 196487424

約数和(自身を除く): 115266724

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 47, 50, 55, 94, 100, 110, 188, 220, 235, 275, 470, 517, 550, 940, 1034, 1100, 1175, 1571, 2068, 2350, 2585, 3142, 4700, 5170, 6284, 7855, 10340, 12925, 15710, 17281, 25850, 31420, 34562, 39275, 51700, 69124, 73837, 78550, 86405, 147674, 157100, 172810, 295348, 345620, 369185, 432025, 738370, 812207, 864050, 1476740, 1624414, 1728100, 1845925, 3248828, 3691850, 4061035, 7383700, 8122070, 16244140, 20305175, 40610350, 81220700]

約数ペア:

[(1, 81220700), (2, 40610350), (4, 20305175), (5, 16244140), (10, 8122070), (11, 7383700), (20, 4061035), (22, 3691850), (25, 3248828), (44, 1845925), (47, 1728100), (50, 1624414), (55, 1476740), (94, 864050), (100, 812207), (110, 738370), (188, 432025), (220, 369185), (235, 345620), (275, 295348), (470, 172810), (517, 157100), (550, 147674), (940, 86405), (1034, 78550), (1100, 73837), (1175, 69124), (1571, 51700), (2068, 39275), (2350, 34562), (2585, 31420), (3142, 25850), (4700, 17281), (5170, 15710), (6284, 12925), (7855, 10340)]