21480590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{74071}}^1$

素因数の和:74107

約数の個数: 16

約数和(自身を含む): 39998880

約数和(自身を除く): 18518290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 74071, 148142, 370355, 740710, 2148059, 4296118, 10740295, 21480590]

約数ペア:

[(1, 21480590), (2, 10740295), (5, 4296118), (10, 2148059), (29, 740710), (58, 370355), (145, 148142), (290, 74071)]