21299408

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7877}}^1$

素因数の和:7911

約数の個数: 30

約数和(自身を含む): 44691894

約数和(自身を除く): 23392486

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7877, 15754, 31508, 63016, 102401, 126032, 204802, 409604, 819208, 1331213, 1638416, 2662426, 5324852, 10649704, 21299408]

約数ペア:

[(1, 21299408), (2, 10649704), (4, 5324852), (8, 2662426), (13, 1638416), (16, 1331213), (26, 819208), (52, 409604), (104, 204802), (169, 126032), (208, 102401), (338, 63016), (676, 31508), (1352, 15754), (2704, 7877)]