20121802580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{505319}}^1$

素因数の和:505520

約数の個数: 48

約数和(自身を含む): 46351992960

約数和(自身を除く): 26230190380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 724, 905, 1810, 1991, 3620, 3982, 7964, 9955, 19910, 39820, 505319, 1010638, 2021276, 2526595, 5053190, 5558509, 10106380, 11117018, 22234036, 27792545, 55585090, 91462739, 111170180, 182925478, 365850956, 457313695, 914627390, 1006090129, 1829254780, 2012180258, 4024360516, 5030450645, 10060901290, 20121802580]

約数ペア:

[(1, 20121802580), (2, 10060901290), (4, 5030450645), (5, 4024360516), (10, 2012180258), (11, 1829254780), (20, 1006090129), (22, 914627390), (44, 457313695), (55, 365850956), (110, 182925478), (181, 111170180), (220, 91462739), (362, 55585090), (724, 27792545), (905, 22234036), (1810, 11117018), (1991, 10106380), (3620, 5558509), (3982, 5053190), (7964, 2526595), (9955, 2021276), (19910, 1010638), (39820, 505319)]