21198225

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{7639}}^1$

素因数の和:7689

約数の個数: 24

約数和(自身を含む): 35999680

約数和(自身を除く): 14801455

約数列:

[1, 3, 5, 15, 25, 37, 75, 111, 185, 555, 925, 2775, 7639, 22917, 38195, 114585, 190975, 282643, 572925, 847929, 1413215, 4239645, 7066075, 21198225]

約数ペア:

[(1, 21198225), (3, 7066075), (5, 4239645), (15, 1413215), (25, 847929), (37, 572925), (75, 282643), (111, 190975), (185, 114585), (555, 38195), (925, 22917), (2775, 7639)]