21267664

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{811}}^1$

素因数の和:979

約数の個数: 40

約数和(自身を含む): 45309600

約数和(自身を除く): 24041936

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 149, 176, 298, 596, 811, 1192, 1622, 1639, 2384, 3244, 3278, 6488, 6556, 8921, 12976, 13112, 17842, 26224, 35684, 71368, 120839, 142736, 241678, 483356, 966712, 1329229, 1933424, 2658458, 5316916, 10633832, 21267664]

約数ペア:

[(1, 21267664), (2, 10633832), (4, 5316916), (8, 2658458), (11, 1933424), (16, 1329229), (22, 966712), (44, 483356), (88, 241678), (149, 142736), (176, 120839), (298, 71368), (596, 35684), (811, 26224), (1192, 17842), (1622, 13112), (1639, 12976), (2384, 8921), (3244, 6556), (3278, 6488)]