2151875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{313}}^1$

素因数の和:344

約数の個数: 20

約数和(自身を含む): 2942808

約数和(自身を除く): 790933

約数列:

[1, 5, 11, 25, 55, 125, 275, 313, 625, 1375, 1565, 3443, 6875, 7825, 17215, 39125, 86075, 195625, 430375, 2151875]

約数ペア:

[(1, 2151875), (5, 430375), (11, 195625), (25, 86075), (55, 39125), (125, 17215), (275, 7825), (313, 6875), (625, 3443), (1375, 1565)]