21496575

素因数分解:

$3^1\times 5^2\times {\mathrm{443}}^1\times {\mathrm{647}}^1$

素因数の和:1103

約数の個数: 24

約数和(自身を含む): 35676288

約数和(自身を除く): 14179713

約数列:

[1, 3, 5, 15, 25, 75, 443, 647, 1329, 1941, 2215, 3235, 6645, 9705, 11075, 16175, 33225, 48525, 286621, 859863, 1433105, 4299315, 7165525, 21496575]

約数ペア:

[(1, 21496575), (3, 7165525), (5, 4299315), (15, 1433105), (25, 859863), (75, 286621), (443, 48525), (647, 33225), (1329, 16175), (1941, 11075), (2215, 9705), (3235, 6645)]