18887895

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{389}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 35773920

約数和(自身を除く): 16886025

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 83, 117, 195, 249, 389, 415, 585, 747, 1079, 1167, 1245, 1945, 3237, 3501, 3735, 5057, 5395, 5835, 9711, 15171, 16185, 17505, 25285, 32287, 45513, 48555, 75855, 96861, 161435, 227565, 290583, 419731, 484305, 1259193, 1452915, 2098655, 3777579, 6295965, 18887895]

約数ペア:

[(1, 18887895), (3, 6295965), (5, 3777579), (9, 2098655), (13, 1452915), (15, 1259193), (39, 484305), (45, 419731), (65, 290583), (83, 227565), (117, 161435), (195, 96861), (249, 75855), (389, 48555), (415, 45513), (585, 32287), (747, 25285), (1079, 17505), (1167, 16185), (1245, 15171), (1945, 9711), (3237, 5835), (3501, 5395), (3735, 5057)]