21281790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41729}}^1$

素因数の和:41756

約数の個数: 32

約数和(自身を含む): 54082080

約数和(自身を除く): 32800290

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 255, 510, 41729, 83458, 125187, 208645, 250374, 417290, 625935, 709393, 1251870, 1418786, 2128179, 3546965, 4256358, 7093930, 10640895, 21281790]

約数ペア:

[(1, 21281790), (2, 10640895), (3, 7093930), (5, 4256358), (6, 3546965), (10, 2128179), (15, 1418786), (17, 1251870), (30, 709393), (34, 625935), (51, 417290), (85, 250374), (102, 208645), (170, 125187), (255, 83458), (510, 41729)]