20258680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38959}}^1$

素因数の和:38983

約数の個数: 32

約数和(自身を含む): 49089600

約数和(自身を除く): 28830920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38959, 77918, 155836, 194795, 311672, 389590, 506467, 779180, 1012934, 1558360, 2025868, 2532335, 4051736, 5064670, 10129340, 20258680]

約数ペア:

[(1, 20258680), (2, 10129340), (4, 5064670), (5, 4051736), (8, 2532335), (10, 2025868), (13, 1558360), (20, 1012934), (26, 779180), (40, 506467), (52, 389590), (65, 311672), (104, 194795), (130, 155836), (260, 77918), (520, 38959)]