21770252

素因数分解:

$2^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{1901}}^1$

素因数の和:2321

約数の個数: 24

約数和(自身を含む): 43669920

約数和(自身を除く): 21899668

約数列:

[1, 2, 4, 7, 14, 28, 409, 818, 1636, 1901, 2863, 3802, 5726, 7604, 11452, 13307, 26614, 53228, 777509, 1555018, 3110036, 5442563, 10885126, 21770252]

約数ペア:

[(1, 21770252), (2, 10885126), (4, 5442563), (7, 3110036), (14, 1555018), (28, 777509), (409, 53228), (818, 26614), (1636, 13307), (1901, 11452), (2863, 7604), (3802, 5726)]