18461420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13001}}^1$

素因数の和:13081

約数の個数: 24

約数和(自身を含む): 39318048

約数和(自身を除く): 20856628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13001, 26002, 52004, 65005, 130010, 260020, 923071, 1846142, 3692284, 4615355, 9230710, 18461420]

約数ペア:

[(1, 18461420), (2, 9230710), (4, 4615355), (5, 3692284), (10, 1846142), (20, 923071), (71, 260020), (142, 130010), (284, 65005), (355, 52004), (710, 26002), (1420, 13001)]