199909688

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{223}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 419973120

約数和(自身を除く): 220063432

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 167, 223, 244, 334, 446, 488, 668, 671, 892, 1336, 1342, 1784, 1837, 2453, 2684, 3674, 4906, 5368, 7348, 9812, 10187, 13603, 14696, 19624, 20374, 27206, 37241, 40748, 54412, 74482, 81496, 108824, 112057, 148964, 149633, 224114, 297928, 299266, 409651, 448228, 598532, 819302, 896456, 1197064, 1638604, 2271701, 3277208, 4543402, 9086804, 18173608, 24988711, 49977422, 99954844, 199909688]

約数ペア:

[(1, 199909688), (2, 99954844), (4, 49977422), (8, 24988711), (11, 18173608), (22, 9086804), (44, 4543402), (61, 3277208), (88, 2271701), (122, 1638604), (167, 1197064), (223, 896456), (244, 819302), (334, 598532), (446, 448228), (488, 409651), (668, 299266), (671, 297928), (892, 224114), (1336, 149633), (1342, 148964), (1784, 112057), (1837, 108824), (2453, 81496), (2684, 74482), (3674, 54412), (4906, 40748), (5368, 37241), (7348, 27206), (9812, 20374), (10187, 19624), (13603, 14696)]