201720045

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{1879}}^1$

素因数の和:2325

約数の個数: 32

約数和(自身を含む): 342731520

約数和(自身を除く): 141011475

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 421, 1263, 1879, 2105, 5637, 6315, 7157, 9395, 21471, 28185, 31943, 35785, 95829, 107355, 159715, 479145, 791059, 2373177, 3955295, 11865885, 13448003, 40344009, 67240015, 201720045]

約数ペア:

[(1, 201720045), (3, 67240015), (5, 40344009), (15, 13448003), (17, 11865885), (51, 3955295), (85, 2373177), (255, 791059), (421, 479145), (1263, 159715), (1879, 107355), (2105, 95829), (5637, 35785), (6315, 31943), (7157, 28185), (9395, 21471)]