219179980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{644647}}^1$

素因数の和:644673

約数の個数: 24

約数和(自身を含む): 487353888

約数和(自身を除く): 268173908

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 644647, 1289294, 2578588, 3223235, 6446470, 10958999, 12892940, 21917998, 43835996, 54794995, 109589990, 219179980]

約数ペア:

[(1, 219179980), (2, 109589990), (4, 54794995), (5, 43835996), (10, 21917998), (17, 12892940), (20, 10958999), (34, 6446470), (68, 3223235), (85, 2578588), (170, 1289294), (340, 644647)]