21377018

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{1303}}^1$

素因数の和:1949

約数の個数: 16

約数和(自身を含む): 34613376

約数和(自身を除く): 13236358

約数列:

[1, 2, 13, 26, 631, 1262, 1303, 2606, 8203, 16406, 16939, 33878, 822193, 1644386, 10688509, 21377018]

約数ペア:

[(1, 21377018), (2, 10688509), (13, 1644386), (26, 822193), (631, 33878), (1262, 16939), (1303, 16406), (2606, 8203)]