21428638

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{401}}^1$

素因数の和:768

約数の個数: 32

約数和(自身を含む): 40290048

約数和(自身を除く): 18861410

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 347, 401, 694, 802, 2429, 2807, 3817, 4411, 4858, 5614, 7634, 8822, 26719, 30877, 53438, 61754, 139147, 278294, 974029, 1530617, 1948058, 3061234, 10714319, 21428638]

約数ペア:

[(1, 21428638), (2, 10714319), (7, 3061234), (11, 1948058), (14, 1530617), (22, 974029), (77, 278294), (154, 139147), (347, 61754), (401, 53438), (694, 30877), (802, 26719), (2429, 8822), (2807, 7634), (3817, 5614), (4411, 4858)]