20957020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1399}}^1$

素因数の和:1522

約数の個数: 48

約数和(自身を含む): 50803200

約数和(自身を除く): 29846180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1399, 1498, 2140, 2798, 2996, 3745, 5596, 6995, 7490, 9793, 13990, 14980, 19586, 27980, 39172, 48965, 97930, 149693, 195860, 299386, 598772, 748465, 1047851, 1496930, 2095702, 2993860, 4191404, 5239255, 10478510, 20957020]

約数ペア:

[(1, 20957020), (2, 10478510), (4, 5239255), (5, 4191404), (7, 2993860), (10, 2095702), (14, 1496930), (20, 1047851), (28, 748465), (35, 598772), (70, 299386), (107, 195860), (140, 149693), (214, 97930), (428, 48965), (535, 39172), (749, 27980), (1070, 19586), (1399, 14980), (1498, 13990), (2140, 9793), (2798, 7490), (2996, 6995), (3745, 5596)]