20050640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6113}}^1$

素因数の和:6167

約数の個数: 40

約数和(自身を含む): 47762568

約数和(自身を除く): 27711928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6113, 12226, 24452, 30565, 48904, 61130, 97808, 122260, 244520, 250633, 489040, 501266, 1002532, 1253165, 2005064, 2506330, 4010128, 5012660, 10025320, 20050640]

約数ペア:

[(1, 20050640), (2, 10025320), (4, 5012660), (5, 4010128), (8, 2506330), (10, 2005064), (16, 1253165), (20, 1002532), (40, 501266), (41, 489040), (80, 250633), (82, 244520), (164, 122260), (205, 97808), (328, 61130), (410, 48904), (656, 30565), (820, 24452), (1640, 12226), (3280, 6113)]