21218630

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{617}}^1$

素因数の和:824

約数の個数: 32

約数和(自身を含む): 40491360

約数和(自身を除く): 19272730

約数列:

[1, 2, 5, 10, 19, 38, 95, 181, 190, 362, 617, 905, 1234, 1810, 3085, 3439, 6170, 6878, 11723, 17195, 23446, 34390, 58615, 111677, 117230, 223354, 558385, 1116770, 2121863, 4243726, 10609315, 21218630]

約数ペア:

[(1, 21218630), (2, 10609315), (5, 4243726), (10, 2121863), (19, 1116770), (38, 558385), (95, 223354), (181, 117230), (190, 111677), (362, 58615), (617, 34390), (905, 23446), (1234, 17195), (1810, 11723), (3085, 6878), (3439, 6170)]