20974870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{2749}}^1$

素因数の和:2872

約数の個数: 32

約数和(自身を含む): 43560000

約数和(自身を除く): 22585130

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 109, 218, 545, 763, 1090, 1526, 2749, 3815, 5498, 7630, 13745, 19243, 27490, 38486, 96215, 192430, 299641, 599282, 1498205, 2097487, 2996410, 4194974, 10487435, 20974870]

約数ペア:

[(1, 20974870), (2, 10487435), (5, 4194974), (7, 2996410), (10, 2097487), (14, 1498205), (35, 599282), (70, 299641), (109, 192430), (218, 96215), (545, 38486), (763, 27490), (1090, 19243), (1526, 13745), (2749, 7630), (3815, 5498)]