20121160

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12269}}^1$

素因数の和:12321

約数の個数: 32

約数和(自身を含む): 46380600

約数和(自身を除く): 26259440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12269, 24538, 49076, 61345, 98152, 122690, 245380, 490760, 503029, 1006058, 2012116, 2515145, 4024232, 5030290, 10060580, 20121160]

約数ペア:

[(1, 20121160), (2, 10060580), (4, 5030290), (5, 4024232), (8, 2515145), (10, 2012116), (20, 1006058), (40, 503029), (41, 490760), (82, 245380), (164, 122690), (205, 98152), (328, 61345), (410, 49076), (820, 24538), (1640, 12269)]