19968806

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{69821}}^1$

素因数の和:69847

約数の個数: 16

約数和(自身を含む): 35190288

約数和(自身を除く): 15221482

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 69821, 139642, 768031, 907673, 1536062, 1815346, 9984403, 19968806]

約数ペア:

[(1, 19968806), (2, 9984403), (11, 1815346), (13, 1536062), (22, 907673), (26, 768031), (143, 139642), (286, 69821)]