21019845

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18199}}^1$

素因数の和:18225

約数の個数: 32

約数和(自身を含む): 41932800

約数和(自身を除く): 20912955

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18199, 54597, 90995, 127393, 200189, 272985, 382179, 600567, 636965, 1000945, 1401323, 1910895, 3002835, 4203969, 7006615, 21019845]

約数ペア:

[(1, 21019845), (3, 7006615), (5, 4203969), (7, 3002835), (11, 1910895), (15, 1401323), (21, 1000945), (33, 636965), (35, 600567), (55, 382179), (77, 272985), (105, 200189), (165, 127393), (231, 90995), (385, 54597), (1155, 18199)]