20429480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12457}}^1$

素因数の和:12509

約数の個数: 32

約数和(自身を含む): 47091240

約数和(自身を除く): 26661760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12457, 24914, 49828, 62285, 99656, 124570, 249140, 498280, 510737, 1021474, 2042948, 2553685, 4085896, 5107370, 10214740, 20429480]

約数ペア:

[(1, 20429480), (2, 10214740), (4, 5107370), (5, 4085896), (8, 2553685), (10, 2042948), (20, 1021474), (40, 510737), (41, 498280), (82, 249140), (164, 124570), (205, 99656), (328, 62285), (410, 49828), (820, 24914), (1640, 12457)]