21015608

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6551}}^1$

素因数の和:6958

約数の個数: 16

約数和(自身を含む): 39508560

約数和(自身を除く): 18492952

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6551, 13102, 26204, 52408, 2626951, 5253902, 10507804, 21015608]

約数ペア:

[(1, 21015608), (2, 10507804), (4, 5253902), (8, 2626951), (401, 52408), (802, 26204), (1604, 13102), (3208, 6551)]