20043920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19273}}^1$

素因数の和:19299

約数の個数: 40

約数和(自身を含む): 50189496

約数和(自身を除く): 30145576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19273, 38546, 77092, 96365, 154184, 192730, 250549, 308368, 385460, 501098, 770920, 1002196, 1252745, 1541840, 2004392, 2505490, 4008784, 5010980, 10021960, 20043920]

約数ペア:

[(1, 20043920), (2, 10021960), (4, 5010980), (5, 4008784), (8, 2505490), (10, 2004392), (13, 1541840), (16, 1252745), (20, 1002196), (26, 770920), (40, 501098), (52, 385460), (65, 308368), (80, 250549), (104, 192730), (130, 154184), (208, 96365), (260, 77092), (520, 38546), (1040, 19273)]