20810416

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{317}}^1\times {\mathrm{373}}^1$

素因数の和:709

約数の個数: 40

約数和(自身を含む): 44242704

約数和(自身を除く): 23432288

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 317, 373, 634, 746, 1268, 1492, 2536, 2984, 3487, 4103, 5072, 5968, 6974, 8206, 13948, 16412, 27896, 32824, 55792, 65648, 118241, 236482, 472964, 945928, 1300651, 1891856, 2601302, 5202604, 10405208, 20810416]

約数ペア:

[(1, 20810416), (2, 10405208), (4, 5202604), (8, 2601302), (11, 1891856), (16, 1300651), (22, 945928), (44, 472964), (88, 236482), (176, 118241), (317, 65648), (373, 55792), (634, 32824), (746, 27896), (1268, 16412), (1492, 13948), (2536, 8206), (2984, 6974), (3487, 5968), (4103, 5072)]