20821856

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{397}}^1$

素因数の和:567

約数の個数: 48

約数和(自身を含む): 45133200

約数和(自身を除く): 24311344

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 149, 176, 298, 352, 397, 596, 794, 1192, 1588, 1639, 2384, 3176, 3278, 4367, 4768, 6352, 6556, 8734, 12704, 13112, 17468, 26224, 34936, 52448, 59153, 69872, 118306, 139744, 236612, 473224, 650683, 946448, 1301366, 1892896, 2602732, 5205464, 10410928, 20821856]

約数ペア:

[(1, 20821856), (2, 10410928), (4, 5205464), (8, 2602732), (11, 1892896), (16, 1301366), (22, 946448), (32, 650683), (44, 473224), (88, 236612), (149, 139744), (176, 118306), (298, 69872), (352, 59153), (397, 52448), (596, 34936), (794, 26224), (1192, 17468), (1588, 13112), (1639, 12704), (2384, 8734), (3176, 6556), (3278, 6352), (4367, 4768)]