180561875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:417

約数の個数: 40

約数和(自身を含む): 247195872

約数和(自身を除く): 66633997

約数列:

[1, 5, 13, 25, 65, 71, 125, 313, 325, 355, 625, 923, 1565, 1625, 1775, 4069, 4615, 7825, 8125, 8875, 20345, 22223, 23075, 39125, 44375, 101725, 111115, 115375, 195625, 288899, 508625, 555575, 576875, 1444495, 2543125, 2777875, 7222475, 13889375, 36112375, 180561875]

約数ペア:

[(1, 180561875), (5, 36112375), (13, 13889375), (25, 7222475), (65, 2777875), (71, 2543125), (125, 1444495), (313, 576875), (325, 555575), (355, 508625), (625, 288899), (923, 195625), (1565, 115375), (1625, 111115), (1775, 101725), (4069, 44375), (4615, 39125), (7825, 23075), (8125, 22223), (8875, 20345)]