21372940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{14639}}^1$

素因数の和:14721

約数の個数: 24

約数和(自身を含む): 45501120

約数和(自身を除く): 24128180

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 14639, 29278, 58556, 73195, 146390, 292780, 1068647, 2137294, 4274588, 5343235, 10686470, 21372940]

約数ペア:

[(1, 21372940), (2, 10686470), (4, 5343235), (5, 4274588), (10, 2137294), (20, 1068647), (73, 292780), (146, 146390), (292, 73195), (365, 58556), (730, 29278), (1460, 14639)]