18979894

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{1019}}^1$

素因数の和:1227

約数の個数: 16

約数和(自身を含む): 29131200

約数和(自身を除く): 10151306

約数列:

[1, 2, 67, 134, 139, 278, 1019, 2038, 9313, 18626, 68273, 136546, 141641, 283282, 9489947, 18979894]

約数ペア:

[(1, 18979894), (2, 9489947), (67, 283282), (134, 141641), (139, 136546), (278, 68273), (1019, 18626), (2038, 9313)]