20462680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{683}}^1$

素因数の和:808

約数の個数: 64

約数和(自身を含む): 53187840

約数和(自身を除く): 32725160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 107, 140, 214, 280, 428, 535, 683, 749, 856, 1070, 1366, 1498, 2140, 2732, 2996, 3415, 3745, 4280, 4781, 5464, 5992, 6830, 7490, 9562, 13660, 14980, 19124, 23905, 27320, 29960, 38248, 47810, 73081, 95620, 146162, 191240, 292324, 365405, 511567, 584648, 730810, 1023134, 1461620, 2046268, 2557835, 2923240, 4092536, 5115670, 10231340, 20462680]

約数ペア:

[(1, 20462680), (2, 10231340), (4, 5115670), (5, 4092536), (7, 2923240), (8, 2557835), (10, 2046268), (14, 1461620), (20, 1023134), (28, 730810), (35, 584648), (40, 511567), (56, 365405), (70, 292324), (107, 191240), (140, 146162), (214, 95620), (280, 73081), (428, 47810), (535, 38248), (683, 29960), (749, 27320), (856, 23905), (1070, 19124), (1366, 14980), (1498, 13660), (2140, 9562), (2732, 7490), (2996, 6830), (3415, 5992), (3745, 5464), (4280, 4781)]