20121480020

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1021}}^1\times {\mathrm{1523}}^1$

素因数の和:3200

約数の個数: 48

約数和(自身を含む): 42389682048

約数和(自身を除く): 22268202028

約数列:

[1, 2, 4, 5, 10, 20, 647, 1021, 1294, 1523, 2042, 2588, 3046, 3235, 4084, 5105, 6092, 6470, 7615, 10210, 12940, 15230, 20420, 30460, 660587, 985381, 1321174, 1554983, 1970762, 2642348, 3109966, 3302935, 3941524, 4926905, 6219932, 6605870, 7774915, 9853810, 13211740, 15549830, 19707620, 31099660, 1006074001, 2012148002, 4024296004, 5030370005, 10060740010, 20121480020]

約数ペア:

[(1, 20121480020), (2, 10060740010), (4, 5030370005), (5, 4024296004), (10, 2012148002), (20, 1006074001), (647, 31099660), (1021, 19707620), (1294, 15549830), (1523, 13211740), (2042, 9853810), (2588, 7774915), (3046, 6605870), (3235, 6219932), (4084, 4926905), (5105, 3941524), (6092, 3302935), (6470, 3109966), (7615, 2642348), (10210, 1970762), (12940, 1554983), (15230, 1321174), (20420, 985381), (30460, 660587)]