20167780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2579}}^1$

素因数の和:2628

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 26643740

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2579, 3910, 5158, 7820, 10316, 12895, 25790, 43843, 51580, 59317, 87686, 118634, 175372, 219215, 237268, 296585, 438430, 593170, 876860, 1008389, 1186340, 2016778, 4033556, 5041945, 10083890, 20167780]

約数ペア:

[(1, 20167780), (2, 10083890), (4, 5041945), (5, 4033556), (10, 2016778), (17, 1186340), (20, 1008389), (23, 876860), (34, 593170), (46, 438430), (68, 296585), (85, 237268), (92, 219215), (115, 175372), (170, 118634), (230, 87686), (340, 59317), (391, 51580), (460, 43843), (782, 25790), (1564, 12895), (1955, 10316), (2579, 7820), (3910, 5158)]