20853968

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1783}}^1$

素因数の和:1851

約数の個数: 40

約数和(自身を含む): 43800768

約数和(自身を除く): 22946800

約数列:

[1, 2, 4, 8, 16, 17, 34, 43, 68, 86, 136, 172, 272, 344, 688, 731, 1462, 1783, 2924, 3566, 5848, 7132, 11696, 14264, 28528, 30311, 60622, 76669, 121244, 153338, 242488, 306676, 484976, 613352, 1226704, 1303373, 2606746, 5213492, 10426984, 20853968]

約数ペア:

[(1, 20853968), (2, 10426984), (4, 5213492), (8, 2606746), (16, 1303373), (17, 1226704), (34, 613352), (43, 484976), (68, 306676), (86, 242488), (136, 153338), (172, 121244), (272, 76669), (344, 60622), (688, 30311), (731, 28528), (1462, 14264), (1783, 11696), (2924, 7132), (3566, 5848)]