205912040

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{34549}}^1$

素因数の和:34709

約数の個数: 32

約数和(自身を含む): 466425000

約数和(自身を除く): 260512960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 34549, 69098, 138196, 172745, 276392, 345490, 690980, 1381960, 5147801, 10295602, 20591204, 25739005, 41182408, 51478010, 102956020, 205912040]

約数ペア:

[(1, 205912040), (2, 102956020), (4, 51478010), (5, 41182408), (8, 25739005), (10, 20591204), (20, 10295602), (40, 5147801), (149, 1381960), (298, 690980), (596, 345490), (745, 276392), (1192, 172745), (1490, 138196), (2980, 69098), (5960, 34549)]