650171990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{161333}}^1$

素因数の和:161384

約数の個数: 32

約数和(自身を含む): 1300997376

約数和(自身を除く): 650825386

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 161333, 322666, 806665, 1613330, 2097329, 4194658, 5001323, 10002646, 10486645, 20973290, 25006615, 50013230, 65017199, 130034398, 325085995, 650171990]

約数ペア:

[(1, 650171990), (2, 325085995), (5, 130034398), (10, 65017199), (13, 50013230), (26, 25006615), (31, 20973290), (62, 10486645), (65, 10002646), (130, 5001323), (155, 4194658), (310, 2097329), (403, 1613330), (806, 806665), (2015, 322666), (4030, 161333)]