198839720

素因数分解:

$2^3\times 5^1\times {\mathrm{4970993}}^1$

素因数の和:4971004

約数の個数: 16

約数和(自身を含む): 447389460

約数和(自身を除く): 248549740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4970993, 9941986, 19883972, 24854965, 39767944, 49709930, 99419860, 198839720]

約数ペア:

[(1, 198839720), (2, 99419860), (4, 49709930), (5, 39767944), (8, 24854965), (10, 19883972), (20, 9941986), (40, 4970993)]