19899061

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{677}}^1$

素因数の和:733

約数の個数: 32

約数和(自身を含む): 27336960

約数和(自身を除く): 7437899

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 677, 1547, 1729, 2261, 4199, 4739, 8801, 11509, 12863, 29393, 61607, 80563, 90041, 149617, 167219, 218671, 1047319, 1170533, 1530697, 2842723, 19899061]

約数ペア:

[(1, 19899061), (7, 2842723), (13, 1530697), (17, 1170533), (19, 1047319), (91, 218671), (119, 167219), (133, 149617), (221, 90041), (247, 80563), (323, 61607), (677, 29393), (1547, 12863), (1729, 11509), (2261, 8801), (4199, 4739)]