20564560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15121}}^1$

素因数の和:15151

約数の個数: 40

約数和(自身を含む): 50628456

約数和(自身を除く): 30063896

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15121, 30242, 60484, 75605, 120968, 151210, 241936, 257057, 302420, 514114, 604840, 1028228, 1209680, 1285285, 2056456, 2570570, 4112912, 5141140, 10282280, 20564560]

約数ペア:

[(1, 20564560), (2, 10282280), (4, 5141140), (5, 4112912), (8, 2570570), (10, 2056456), (16, 1285285), (17, 1209680), (20, 1028228), (34, 604840), (40, 514114), (68, 302420), (80, 257057), (85, 241936), (136, 151210), (170, 120968), (272, 75605), (340, 60484), (680, 30242), (1360, 15121)]