21351975

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9817}}^1$

素因数の和:9859

約数の個数: 24

約数和(自身を含む): 36522960

約数和(自身を除く): 15170985

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9817, 29451, 49085, 147255, 245425, 284693, 736275, 854079, 1423465, 4270395, 7117325, 21351975]

約数ペア:

[(1, 21351975), (3, 7117325), (5, 4270395), (15, 1423465), (25, 854079), (29, 736275), (75, 284693), (87, 245425), (145, 147255), (435, 49085), (725, 29451), (2175, 9817)]