21458584

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2797}}^1$

素因数の和:2947

約数の個数: 32

約数和(自身を含む): 46334880

約数和(自身を除く): 24876296

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 274, 548, 959, 1096, 1918, 2797, 3836, 5594, 7672, 11188, 19579, 22376, 39158, 78316, 156632, 383189, 766378, 1532756, 2682323, 3065512, 5364646, 10729292, 21458584]

約数ペア:

[(1, 21458584), (2, 10729292), (4, 5364646), (7, 3065512), (8, 2682323), (14, 1532756), (28, 766378), (56, 383189), (137, 156632), (274, 78316), (548, 39158), (959, 22376), (1096, 19579), (1918, 11188), (2797, 7672), (3836, 5594)]