197599120

素因数分解:

$2^4\times 5^1\times {\mathrm{2469989}}^1$

素因数の和:2470002

約数の個数: 20

約数和(自身を含む): 459418140

約数和(自身を除く): 261819020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2469989, 4939978, 9879956, 12349945, 19759912, 24699890, 39519824, 49399780, 98799560, 197599120]

約数ペア:

[(1, 197599120), (2, 98799560), (4, 49399780), (5, 39519824), (8, 24699890), (10, 19759912), (16, 12349945), (20, 9879956), (40, 4939978), (80, 2469989)]