20009980

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{1913}}^1$

素因数の和:2445

約数の個数: 24

約数和(自身を含む): 42123312

約数和(自身を除く): 22113332

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 1913, 2092, 2615, 3826, 5230, 7652, 9565, 10460, 19130, 38260, 1000499, 2000998, 4001996, 5002495, 10004990, 20009980]

約数ペア:

[(1, 20009980), (2, 10004990), (4, 5002495), (5, 4001996), (10, 2000998), (20, 1000499), (523, 38260), (1046, 19130), (1913, 10460), (2092, 9565), (2615, 7652), (3826, 5230)]