20979210

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{99901}}^1$

素因数の和:99918

約数の個数: 32

約数和(自身を含む): 57543552

約数和(自身を除く): 36564342

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 99901, 199802, 299703, 499505, 599406, 699307, 999010, 1398614, 1498515, 2097921, 2997030, 3496535, 4195842, 6993070, 10489605, 20979210]

約数ペア:

[(1, 20979210), (2, 10489605), (3, 6993070), (5, 4195842), (6, 3496535), (7, 2997030), (10, 2097921), (14, 1498515), (15, 1398614), (21, 999010), (30, 699307), (35, 599406), (42, 499505), (70, 299703), (105, 199802), (210, 99901)]