9807920

素因数分解:

$2^4\times 5^1\times {\mathrm{122599}}^1$

素因数の和:122612

約数の個数: 20

約数和(自身を含む): 22803600

約数和(自身を除く): 12995680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 122599, 245198, 490396, 612995, 980792, 1225990, 1961584, 2451980, 4903960, 9807920]

約数ペア:

[(1, 9807920), (2, 4903960), (4, 2451980), (5, 1961584), (8, 1225990), (10, 980792), (16, 612995), (20, 490396), (40, 245198), (80, 122599)]