2001405

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{389}}^1$

素因数の和:418

約数の個数: 32

約数和(自身を含む): 3744000

約数和(自身を除く): 1742595

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 389, 735, 1029, 1167, 1715, 1945, 2723, 5145, 5835, 8169, 13615, 19061, 40845, 57183, 95305, 133427, 285915, 400281, 667135, 2001405]

約数ペア:

[(1, 2001405), (3, 667135), (5, 400281), (7, 285915), (15, 133427), (21, 95305), (35, 57183), (49, 40845), (105, 19061), (147, 13615), (245, 8169), (343, 5835), (389, 5145), (735, 2723), (1029, 1945), (1167, 1715)]