21581660

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{13001}}^1$

素因数の和:13093

約数の個数: 24

約数和(自身を含む): 45871056

約数和(自身を除く): 24289396

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 13001, 26002, 52004, 65005, 130010, 260020, 1079083, 2158166, 4316332, 5395415, 10790830, 21581660]

約数ペア:

[(1, 21581660), (2, 10790830), (4, 5395415), (5, 4316332), (10, 2158166), (20, 1079083), (83, 260020), (166, 130010), (332, 65005), (415, 52004), (830, 26002), (1660, 13001)]