490427391

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 680140800

約数和(自身を除く): 189713409

約数列:

[1, 3, 53, 127, 149, 159, 163, 381, 447, 489, 6731, 7897, 8639, 18923, 20193, 20701, 23691, 24287, 25917, 56769, 62103, 72861, 1002919, 1097153, 1287211, 3008757, 3084449, 3291459, 3861633, 9253347, 163475797, 490427391]

約数ペア:

[(1, 490427391), (3, 163475797), (53, 9253347), (127, 3861633), (149, 3291459), (159, 3084449), (163, 3008757), (381, 1287211), (447, 1097153), (489, 1002919), (6731, 72861), (7897, 62103), (8639, 56769), (18923, 25917), (20193, 24287), (20701, 23691)]