268853390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{66713}}^1$

素因数の和:66764

約数の個数: 32

約数和(自身を含む): 537981696

約数和(自身を除く): 269128306

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 66713, 133426, 333565, 667130, 867269, 1734538, 2068103, 4136206, 4336345, 8672690, 10340515, 20681030, 26885339, 53770678, 134426695, 268853390]

約数ペア:

[(1, 268853390), (2, 134426695), (5, 53770678), (10, 26885339), (13, 20681030), (26, 10340515), (31, 8672690), (62, 4336345), (65, 4136206), (130, 2068103), (155, 1734538), (310, 867269), (403, 667130), (806, 333565), (2015, 133426), (4030, 66713)]