7838350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 16248960

約数和(自身を除く): 8410610

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 389, 403, 650, 775, 778, 806, 1550, 1945, 2015, 3890, 4030, 5057, 9725, 10075, 10114, 12059, 19450, 20150, 24118, 25285, 50570, 60295, 120590, 126425, 156767, 252850, 301475, 313534, 602950, 783835, 1567670, 3919175, 7838350]

約数ペア:

[(1, 7838350), (2, 3919175), (5, 1567670), (10, 783835), (13, 602950), (25, 313534), (26, 301475), (31, 252850), (50, 156767), (62, 126425), (65, 120590), (130, 60295), (155, 50570), (310, 25285), (325, 24118), (389, 20150), (403, 19450), (650, 12059), (775, 10114), (778, 10075), (806, 9725), (1550, 5057), (1945, 4030), (2015, 3890)]