17898867

素因数分解:

$3^3\times 7^2\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:269

約数の個数: 48

約数和(自身を含む): 31409280

約数和(自身を除く): 13510413

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 83, 147, 163, 189, 249, 441, 489, 581, 747, 1141, 1323, 1467, 1743, 2241, 3423, 4067, 4401, 5229, 7987, 10269, 12201, 13529, 15687, 23961, 30807, 36603, 40587, 71883, 94703, 109809, 121761, 215649, 284109, 365283, 662921, 852327, 1988763, 2556981, 5966289, 17898867]

約数ペア:

[(1, 17898867), (3, 5966289), (7, 2556981), (9, 1988763), (21, 852327), (27, 662921), (49, 365283), (63, 284109), (83, 215649), (147, 121761), (163, 109809), (189, 94703), (249, 71883), (441, 40587), (489, 36603), (581, 30807), (747, 23961), (1141, 15687), (1323, 13529), (1467, 12201), (1743, 10269), (2241, 7987), (3423, 5229), (4067, 4401)]