21897173675

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{272777}}^1$

素因数の和:272832

約数の個数: 36

約数和(自身を含む): 30949391880

約数和(自身を除く): 9052218205

約数列:

[1, 5, 13, 19, 25, 65, 95, 169, 247, 325, 475, 845, 1235, 3211, 4225, 6175, 16055, 80275, 272777, 1363885, 3546101, 5182763, 6819425, 17730505, 25913815, 46099313, 67375919, 88652525, 129569075, 230496565, 336879595, 875886947, 1152482825, 1684397975, 4379434735, 21897173675]

約数ペア:

[(1, 21897173675), (5, 4379434735), (13, 1684397975), (19, 1152482825), (25, 875886947), (65, 336879595), (95, 230496565), (169, 129569075), (247, 88652525), (325, 67375919), (475, 46099313), (845, 25913815), (1235, 17730505), (3211, 6819425), (4225, 5182763), (6175, 3546101), (16055, 1363885), (80275, 272777)]