20400318

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{26357}}^1$

素因数の和:26408

約数の個数: 24

約数和(自身を含む): 45230328

約数和(自身を除く): 24830010

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 26357, 52714, 79071, 158142, 237213, 474426, 1133351, 2266702, 3400053, 6800106, 10200159, 20400318]

約数ペア:

[(1, 20400318), (2, 10200159), (3, 6800106), (6, 3400053), (9, 2266702), (18, 1133351), (43, 474426), (86, 237213), (129, 158142), (258, 79071), (387, 52714), (774, 26357)]