20964664

素因数分解:

$2^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{3313}}^1$

素因数の和:3439

約数の個数: 32

約数和(自身を含む): 45335520

約数和(自身を除く): 24370856

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 113, 226, 452, 791, 904, 1582, 3164, 3313, 6328, 6626, 13252, 23191, 26504, 46382, 92764, 185528, 374369, 748738, 1497476, 2620583, 2994952, 5241166, 10482332, 20964664]

約数ペア:

[(1, 20964664), (2, 10482332), (4, 5241166), (7, 2994952), (8, 2620583), (14, 1497476), (28, 748738), (56, 374369), (113, 185528), (226, 92764), (452, 46382), (791, 26504), (904, 23191), (1582, 13252), (3164, 6626), (3313, 6328)]