20878856

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{153521}}^1$

素因数の和:153544

約数の個数: 16

約数和(自身を含む): 41450940

約数和(自身を除く): 20572084

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 153521, 307042, 614084, 1228168, 2609857, 5219714, 10439428, 20878856]

約数ペア:

[(1, 20878856), (2, 10439428), (4, 5219714), (8, 2609857), (17, 1228168), (34, 614084), (68, 307042), (136, 153521)]