20644225

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{223}}^1$

素因数の和:286

約数の個数: 36

約数和(自身を含む): 30720256

約数和(自身を除く): 10076031

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 223, 529, 575, 805, 1115, 1561, 2645, 3703, 4025, 5129, 5575, 7805, 13225, 18515, 25645, 35903, 39025, 92575, 117967, 128225, 179515, 589835, 825769, 897575, 2949175, 4128845, 20644225]

約数ペア:

[(1, 20644225), (5, 4128845), (7, 2949175), (23, 897575), (25, 825769), (35, 589835), (115, 179515), (161, 128225), (175, 117967), (223, 92575), (529, 39025), (575, 35903), (805, 25645), (1115, 18515), (1561, 13225), (2645, 7805), (3703, 5575), (4025, 5129)]