643670390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{181}}^1\times {\mathrm{2939}}^1$

素因数の和:3149

約数の個数: 48

約数和(自身を含む): 1280981520

約数和(自身を除く): 637311130

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 181, 242, 362, 605, 905, 1210, 1810, 1991, 2939, 3982, 5878, 9955, 14695, 19910, 21901, 29390, 32329, 43802, 64658, 109505, 161645, 219010, 323290, 355619, 531959, 711238, 1063918, 1778095, 2659795, 3556190, 5319590, 5851549, 11703098, 29257745, 58515490, 64367039, 128734078, 321835195, 643670390]

約数ペア:

[(1, 643670390), (2, 321835195), (5, 128734078), (10, 64367039), (11, 58515490), (22, 29257745), (55, 11703098), (110, 5851549), (121, 5319590), (181, 3556190), (242, 2659795), (362, 1778095), (605, 1063918), (905, 711238), (1210, 531959), (1810, 355619), (1991, 323290), (2939, 219010), (3982, 161645), (5878, 109505), (9955, 64658), (14695, 43802), (19910, 32329), (21901, 29390)]