161627720

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{6113}}^1$

素因数の和:6785

約数の個数: 32

約数和(自身を含む): 364272120

約数和(自身を除く): 202644400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5288, 6113, 6610, 12226, 13220, 24452, 26440, 30565, 48904, 61130, 122260, 244520, 4040693, 8081386, 16162772, 20203465, 32325544, 40406930, 80813860, 161627720]

約数ペア:

[(1, 161627720), (2, 80813860), (4, 40406930), (5, 32325544), (8, 20203465), (10, 16162772), (20, 8081386), (40, 4040693), (661, 244520), (1322, 122260), (2644, 61130), (3305, 48904), (5288, 30565), (6113, 26440), (6610, 24452), (12226, 13220)]