21244874

素因数分解:

$2^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{7703}}^1$

素因数の和:7909

約数の個数: 16

約数和(自身を含む): 36609408

約数和(自身を除く): 15364534

約数列:

[1, 2, 7, 14, 197, 394, 1379, 2758, 7703, 15406, 53921, 107842, 1517491, 3034982, 10622437, 21244874]

約数ペア:

[(1, 21244874), (2, 10622437), (7, 3034982), (14, 1517491), (197, 107842), (394, 53921), (1379, 15406), (2758, 7703)]