21668816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5483}}^1$

素因数の和:5523

約数の個数: 40

約数和(自身を含む): 47601120

約数和(自身を除く): 25932304

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5483, 10966, 21932, 43864, 71279, 87728, 104177, 142558, 208354, 285116, 416708, 570232, 833416, 1140464, 1354301, 1666832, 2708602, 5417204, 10834408, 21668816]

約数ペア:

[(1, 21668816), (2, 10834408), (4, 5417204), (8, 2708602), (13, 1666832), (16, 1354301), (19, 1140464), (26, 833416), (38, 570232), (52, 416708), (76, 285116), (104, 208354), (152, 142558), (208, 104177), (247, 87728), (304, 71279), (494, 43864), (988, 21932), (1976, 10966), (3952, 5483)]