22780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:93

約数の個数: 24

約数和(自身を含む): 51408

約数和(自身を除く): 28628

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 1139, 1340, 2278, 4556, 5695, 11390, 22780]

約数ペア:

[(1, 22780), (2, 11390), (4, 5695), (5, 4556), (10, 2278), (17, 1340), (20, 1139), (34, 670), (67, 340), (68, 335), (85, 268), (134, 170)]