19990226

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{503}}^1\times {\mathrm{641}}^1$

素因数の和:1177

約数の個数: 16

約数和(自身を含む): 31062528

約数和(自身を除く): 11072302

約数列:

[1, 2, 31, 62, 503, 641, 1006, 1282, 15593, 19871, 31186, 39742, 322423, 644846, 9995113, 19990226]

約数ペア:

[(1, 19990226), (2, 9995113), (31, 644846), (62, 322423), (503, 39742), (641, 31186), (1006, 19871), (1282, 15593)]