21101608

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{3931}}^1$

素因数の和:4009

約数の個数: 32

約数和(自身を含む): 43881120

約数和(自身を除く): 22779512

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 3931, 5368, 7862, 15724, 31448, 43241, 86482, 172964, 239791, 345928, 479582, 959164, 1918328, 2637701, 5275402, 10550804, 21101608]

約数ペア:

[(1, 21101608), (2, 10550804), (4, 5275402), (8, 2637701), (11, 1918328), (22, 959164), (44, 479582), (61, 345928), (88, 239791), (122, 172964), (244, 86482), (488, 43241), (671, 31448), (1342, 15724), (2684, 7862), (3931, 5368)]