20697404

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{8123}}^1$

素因数の和:8154

約数の個数: 36

約数和(自身を含む): 45380664

約数和(自身を除く): 24683260

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 364, 637, 1274, 2548, 8123, 16246, 32492, 56861, 105599, 113722, 211198, 227444, 398027, 422396, 739193, 796054, 1478386, 1592108, 2956772, 5174351, 10348702, 20697404]

約数ペア:

[(1, 20697404), (2, 10348702), (4, 5174351), (7, 2956772), (13, 1592108), (14, 1478386), (26, 796054), (28, 739193), (49, 422396), (52, 398027), (91, 227444), (98, 211198), (182, 113722), (196, 105599), (364, 56861), (637, 32492), (1274, 16246), (2548, 8123)]