21724778890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{127792817}}^1$

素因数の和:127792841

約数の個数: 16

約数和(自身を含む): 41404873032

約数和(自身を除く): 19680094142

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 127792817, 255585634, 638964085, 1277928170, 2172477889, 4344955778, 10862389445, 21724778890]

約数ペア:

[(1, 21724778890), (2, 10862389445), (5, 4344955778), (10, 2172477889), (17, 1277928170), (34, 638964085), (85, 255585634), (170, 127792817)]