217355860

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137567}}^1$

素因数の和:137655

約数の個数: 24

約数和(自身を含む): 462228480

約数和(自身を除く): 244872620

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 137567, 275134, 550268, 687835, 1375670, 2751340, 10867793, 21735586, 43471172, 54338965, 108677930, 217355860]

約数ペア:

[(1, 217355860), (2, 108677930), (4, 54338965), (5, 43471172), (10, 21735586), (20, 10867793), (79, 2751340), (158, 1375670), (316, 687835), (395, 550268), (790, 275134), (1580, 137567)]