20357145

素因数分解:

$3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6197}}^1$

素因数の和:6281

約数の個数: 24

約数和(自身を含む): 35774856

約数和(自身を除く): 15417711

約数列:

[1, 3, 5, 9, 15, 45, 73, 219, 365, 657, 1095, 3285, 6197, 18591, 30985, 55773, 92955, 278865, 452381, 1357143, 2261905, 4071429, 6785715, 20357145]

約数ペア:

[(1, 20357145), (3, 6785715), (5, 4071429), (9, 2261905), (15, 1357143), (45, 452381), (73, 278865), (219, 92955), (365, 55773), (657, 30985), (1095, 18591), (3285, 6197)]