9988820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16111}}^1$

素因数の和:16151

約数の個数: 24

約数和(自身を含む): 21654528

約数和(自身を除く): 11665708

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 16111, 32222, 64444, 80555, 161110, 322220, 499441, 998882, 1997764, 2497205, 4994410, 9988820]

約数ペア:

[(1, 9988820), (2, 4994410), (4, 2497205), (5, 1997764), (10, 998882), (20, 499441), (31, 322220), (62, 161110), (124, 80555), (155, 64444), (310, 32222), (620, 16111)]