21852170

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 40772160

約数和(自身を除く): 18919990

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 571, 890, 1142, 2855, 3827, 5710, 7654, 19135, 24553, 38270, 49106, 50819, 101638, 122765, 245530, 254095, 508190, 2185217, 4370434, 10926085, 21852170]

約数ペア:

[(1, 21852170), (2, 10926085), (5, 4370434), (10, 2185217), (43, 508190), (86, 254095), (89, 245530), (178, 122765), (215, 101638), (430, 50819), (445, 49106), (571, 38270), (890, 24553), (1142, 19135), (2855, 7654), (3827, 5710)]