21915590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{75571}}^1$

素因数の和:75607

約数の個数: 16

約数和(自身を含む): 40808880

約数和(自身を除く): 18893290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 75571, 151142, 377855, 755710, 2191559, 4383118, 10957795, 21915590]

約数ペア:

[(1, 21915590), (2, 10957795), (5, 4383118), (10, 2191559), (29, 755710), (58, 377855), (145, 151142), (290, 75571)]