18812456

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3413}}^1$

素因数の和:3485

約数の個数: 32

約数和(自身を含む): 38714760

約数和(自身を除く): 19902304

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3413, 5512, 6826, 13652, 27304, 44369, 88738, 177476, 180889, 354952, 361778, 723556, 1447112, 2351557, 4703114, 9406228, 18812456]

約数ペア:

[(1, 18812456), (2, 9406228), (4, 4703114), (8, 2351557), (13, 1447112), (26, 723556), (52, 361778), (53, 354952), (104, 180889), (106, 177476), (212, 88738), (424, 44369), (689, 27304), (1378, 13652), (2756, 6826), (3413, 5512)]