21453926

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 36862560

約数和(自身を除く): 15408634

約数列:

[1, 2, 13, 19, 26, 38, 137, 247, 274, 317, 494, 634, 1781, 2603, 3562, 4121, 5206, 6023, 8242, 12046, 33839, 43429, 67678, 78299, 86858, 156598, 564577, 825151, 1129154, 1650302, 10726963, 21453926]

約数ペア:

[(1, 21453926), (2, 10726963), (13, 1650302), (19, 1129154), (26, 825151), (38, 564577), (137, 156598), (247, 86858), (274, 78299), (317, 67678), (494, 43429), (634, 33839), (1781, 12046), (2603, 8242), (3562, 6023), (4121, 5206)]