20287425

素因数分解:

$3^1\times 5^2\times {\mathrm{223}}^1\times {\mathrm{1213}}^1$

素因数の和:1449

約数の個数: 24

約数和(自身を含む): 33720064

約数和(自身を除く): 13432639

約数列:

[1, 3, 5, 15, 25, 75, 223, 669, 1115, 1213, 3345, 3639, 5575, 6065, 16725, 18195, 30325, 90975, 270499, 811497, 1352495, 4057485, 6762475, 20287425]

約数ペア:

[(1, 20287425), (3, 6762475), (5, 4057485), (15, 1352495), (25, 811497), (75, 270499), (223, 90975), (669, 30325), (1115, 18195), (1213, 16725), (3345, 6065), (3639, 5575)]