128890811

素因数分解:

$7^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1\times {\mathrm{647}}^1$

素因数の和:994

約数の個数: 16

約数和(自身を含む): 149299200

約数和(自身を除く): 20408389

約数列:

[1, 7, 149, 191, 647, 1043, 1337, 4529, 28459, 96403, 123577, 199213, 674821, 865039, 18412973, 128890811]

約数ペア:

[(1, 128890811), (7, 18412973), (149, 865039), (191, 674821), (647, 199213), (1043, 123577), (1337, 96403), (4529, 28459)]