21158554

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:270

約数の個数: 32

約数和(自身を含む): 34338816

約数和(自身を除く): 13180262

約数列:

[1, 2, 31, 47, 53, 62, 94, 106, 137, 274, 1457, 1643, 2491, 2914, 3286, 4247, 4982, 6439, 7261, 8494, 12878, 14522, 77221, 154442, 199609, 225091, 341267, 399218, 450182, 682534, 10579277, 21158554]

約数ペア:

[(1, 21158554), (2, 10579277), (31, 682534), (47, 450182), (53, 399218), (62, 341267), (94, 225091), (106, 199609), (137, 154442), (274, 77221), (1457, 14522), (1643, 12878), (2491, 8494), (2914, 7261), (3286, 6439), (4247, 4982)]