21167798020

素因数分解:

$2^2\times 5^1\times {\mathrm{1453}}^1\times {\mathrm{728417}}^1$

素因数の和:729879

約数の個数: 24

約数和(自身を含む): 44483030424

約数和(自身を除く): 23315232404

約数列:

[1, 2, 4, 5, 10, 20, 1453, 2906, 5812, 7265, 14530, 29060, 728417, 1456834, 2913668, 3642085, 7284170, 14568340, 1058389901, 2116779802, 4233559604, 5291949505, 10583899010, 21167798020]

約数ペア:

[(1, 21167798020), (2, 10583899010), (4, 5291949505), (5, 4233559604), (10, 2116779802), (20, 1058389901), (1453, 14568340), (2906, 7284170), (5812, 3642085), (7265, 2913668), (14530, 1456834), (29060, 728417)]