21003060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26927}}^1$

素因数の和:26952

約数の個数: 48

約数和(自身を含む): 63334656

約数和(自身を除く): 42331596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26927, 53854, 80781, 107708, 134635, 161562, 269270, 323124, 350051, 403905, 538540, 700102, 807810, 1050153, 1400204, 1615620, 1750255, 2100306, 3500510, 4200612, 5250765, 7001020, 10501530, 21003060]

約数ペア:

[(1, 21003060), (2, 10501530), (3, 7001020), (4, 5250765), (5, 4200612), (6, 3500510), (10, 2100306), (12, 1750255), (13, 1615620), (15, 1400204), (20, 1050153), (26, 807810), (30, 700102), (39, 538540), (52, 403905), (60, 350051), (65, 323124), (78, 269270), (130, 161562), (156, 134635), (195, 107708), (260, 80781), (390, 53854), (780, 26927)]