161341240

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{20269}}^1$

素因数の和:20479

約数の個数: 32

約数和(自身を含む): 364860000

約数和(自身を除く): 203518760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 20269, 40538, 81076, 101345, 162152, 202690, 405380, 810760, 4033531, 8067062, 16134124, 20167655, 32268248, 40335310, 80670620, 161341240]

約数ペア:

[(1, 161341240), (2, 80670620), (4, 40335310), (5, 32268248), (8, 20167655), (10, 16134124), (20, 8067062), (40, 4033531), (199, 810760), (398, 405380), (796, 202690), (995, 162152), (1592, 101345), (1990, 81076), (3980, 40538), (7960, 20269)]