20549360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19759}}^1$

素因数の和:19785

約数の個数: 40

約数和(自身を含む): 51455040

約数和(自身を除く): 30905680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19759, 39518, 79036, 98795, 158072, 197590, 256867, 316144, 395180, 513734, 790360, 1027468, 1284335, 1580720, 2054936, 2568670, 4109872, 5137340, 10274680, 20549360]

約数ペア:

[(1, 20549360), (2, 10274680), (4, 5137340), (5, 4109872), (8, 2568670), (10, 2054936), (13, 1580720), (16, 1284335), (20, 1027468), (26, 790360), (40, 513734), (52, 395180), (65, 316144), (80, 256867), (104, 197590), (130, 158072), (208, 98795), (260, 79036), (520, 39518), (1040, 19759)]