19918900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{11717}}^1$

素因数の和:11748

約数の個数: 36

約数和(自身を含む): 45770508

約数和(自身を除く): 25851608

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 340, 425, 850, 1700, 11717, 23434, 46868, 58585, 117170, 199189, 234340, 292925, 398378, 585850, 796756, 995945, 1171700, 1991890, 3983780, 4979725, 9959450, 19918900]

約数ペア:

[(1, 19918900), (2, 9959450), (4, 4979725), (5, 3983780), (10, 1991890), (17, 1171700), (20, 995945), (25, 796756), (34, 585850), (50, 398378), (68, 292925), (85, 234340), (100, 199189), (170, 117170), (340, 58585), (425, 46868), (850, 23434), (1700, 11717)]