21149210

素因数分解:

$2^1\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{1601}}^1$

素因数の和:2929

約数の個数: 16

約数和(自身を含む): 38121192

約数和(自身を除く): 16971982

約数列:

[1, 2, 5, 10, 1321, 1601, 2642, 3202, 6605, 8005, 13210, 16010, 2114921, 4229842, 10574605, 21149210]

約数ペア:

[(1, 21149210), (2, 10574605), (5, 4229842), (10, 2114921), (1321, 16010), (1601, 13210), (2642, 8005), (3202, 6605)]