21109712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101489}}^1$

素因数の和:101510

約数の個数: 20

約数和(自身を含む): 44046660

約数和(自身を除く): 22936948

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101489, 202978, 405956, 811912, 1319357, 1623824, 2638714, 5277428, 10554856, 21109712]

約数ペア:

[(1, 21109712), (2, 10554856), (4, 5277428), (8, 2638714), (13, 1623824), (16, 1319357), (26, 811912), (52, 405956), (104, 202978), (208, 101489)]