215920375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{373}}^1\times {\mathrm{421}}^1$

素因数の和:820

約数の個数: 32

約数和(自身を含む): 295454016

約数和(自身を除く): 79533641

約数列:

[1, 5, 11, 25, 55, 125, 275, 373, 421, 1375, 1865, 2105, 4103, 4631, 9325, 10525, 20515, 23155, 46625, 52625, 102575, 115775, 157033, 512875, 578875, 785165, 1727363, 3925825, 8636815, 19629125, 43184075, 215920375]

約数ペア:

[(1, 215920375), (5, 43184075), (11, 19629125), (25, 8636815), (55, 3925825), (125, 1727363), (275, 785165), (373, 578875), (421, 512875), (1375, 157033), (1865, 115775), (2105, 102575), (4103, 52625), (4631, 46625), (9325, 23155), (10525, 20515)]