20873468

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 47101152

約数和(自身を除く): 26227684

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 61, 77, 101, 121, 122, 154, 202, 242, 244, 308, 404, 427, 484, 671, 707, 847, 854, 1111, 1342, 1414, 1694, 1708, 2222, 2684, 2828, 3388, 4444, 4697, 6161, 7381, 7777, 9394, 12221, 12322, 14762, 15554, 18788, 24442, 24644, 29524, 31108, 43127, 48884, 51667, 67771, 85547, 86254, 103334, 135542, 171094, 172508, 206668, 271084, 342188, 474397, 745481, 948794, 1490962, 1897588, 2981924, 5218367, 10436734, 20873468]

約数ペア:

[(1, 20873468), (2, 10436734), (4, 5218367), (7, 2981924), (11, 1897588), (14, 1490962), (22, 948794), (28, 745481), (44, 474397), (61, 342188), (77, 271084), (101, 206668), (121, 172508), (122, 171094), (154, 135542), (202, 103334), (242, 86254), (244, 85547), (308, 67771), (404, 51667), (427, 48884), (484, 43127), (671, 31108), (707, 29524), (847, 24644), (854, 24442), (1111, 18788), (1342, 15554), (1414, 14762), (1694, 12322), (1708, 12221), (2222, 9394), (2684, 7777), (2828, 7381), (3388, 6161), (4444, 4697)]