20898556

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 44450560

約数和(自身を除く): 23552004

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 163, 241, 266, 326, 482, 532, 652, 964, 1141, 1687, 2282, 3097, 3374, 4564, 4579, 6194, 6748, 9158, 12388, 18316, 21679, 32053, 39283, 43358, 64106, 78566, 86716, 128212, 157132, 274981, 549962, 746377, 1099924, 1492754, 2985508, 5224639, 10449278, 20898556]

約数ペア:

[(1, 20898556), (2, 10449278), (4, 5224639), (7, 2985508), (14, 1492754), (19, 1099924), (28, 746377), (38, 549962), (76, 274981), (133, 157132), (163, 128212), (241, 86716), (266, 78566), (326, 64106), (482, 43358), (532, 39283), (652, 32053), (964, 21679), (1141, 18316), (1687, 12388), (2282, 9158), (3097, 6748), (3374, 6194), (4564, 4579)]