19717360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18959}}^1$

素因数の和:18985

約数の個数: 40

約数和(自身を含む): 49371840

約数和(自身を除く): 29654480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 18959, 37918, 75836, 94795, 151672, 189590, 246467, 303344, 379180, 492934, 758360, 985868, 1232335, 1516720, 1971736, 2464670, 3943472, 4929340, 9858680, 19717360]

約数ペア:

[(1, 19717360), (2, 9858680), (4, 4929340), (5, 3943472), (8, 2464670), (10, 1971736), (13, 1516720), (16, 1232335), (20, 985868), (26, 758360), (40, 492934), (52, 379180), (65, 303344), (80, 246467), (104, 189590), (130, 151672), (208, 94795), (260, 75836), (520, 37918), (1040, 18959)]