21215325

素因数分解:

$3^1\times 5^2\times {\mathrm{191}}^1\times {\mathrm{1481}}^1$

素因数の和:1685

約数の個数: 24

約数和(自身を含む): 35283456

約数和(自身を除く): 14068131

約数列:

[1, 3, 5, 15, 25, 75, 191, 573, 955, 1481, 2865, 4443, 4775, 7405, 14325, 22215, 37025, 111075, 282871, 848613, 1414355, 4243065, 7071775, 21215325]

約数ペア:

[(1, 21215325), (3, 7071775), (5, 4243065), (15, 1414355), (25, 848613), (75, 282871), (191, 111075), (573, 37025), (955, 22215), (1481, 14325), (2865, 7405), (4443, 4775)]