20907915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1151}}^1$

素因数の和:1339

約数の個数: 32

約数和(自身を含む): 38486016

約数和(自身を除く): 17578101

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 173, 519, 865, 1151, 1211, 2595, 3453, 3633, 5755, 6055, 8057, 17265, 18165, 24171, 40285, 120855, 199123, 597369, 995615, 1393861, 2986845, 4181583, 6969305, 20907915]

約数ペア:

[(1, 20907915), (3, 6969305), (5, 4181583), (7, 2986845), (15, 1393861), (21, 995615), (35, 597369), (105, 199123), (173, 120855), (519, 40285), (865, 24171), (1151, 18165), (1211, 17265), (2595, 8057), (3453, 6055), (3633, 5755)]