213883750

素因数分解:

$2^1\times 5^4\times {\mathrm{397}}^1\times {\mathrm{431}}^1$

素因数の和:850

約数の個数: 40

約数和(自身を含む): 402846048

約数和(自身を除く): 188962298

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 397, 431, 625, 794, 862, 1250, 1985, 2155, 3970, 4310, 9925, 10775, 19850, 21550, 49625, 53875, 99250, 107750, 171107, 248125, 269375, 342214, 496250, 538750, 855535, 1711070, 4277675, 8555350, 21388375, 42776750, 106941875, 213883750]

約数ペア:

[(1, 213883750), (2, 106941875), (5, 42776750), (10, 21388375), (25, 8555350), (50, 4277675), (125, 1711070), (250, 855535), (397, 538750), (431, 496250), (625, 342214), (794, 269375), (862, 248125), (1250, 171107), (1985, 107750), (2155, 99250), (3970, 53875), (4310, 49625), (9925, 21550), (10775, 19850)]