21572125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{293}}^1$

素因数の和:358

約数の個数: 32

約数和(自身を含む): 29352960

約数和(自身を除く): 7780835

約数列:

[1, 5, 19, 25, 31, 95, 125, 155, 293, 475, 589, 775, 1465, 2375, 2945, 3875, 5567, 7325, 9083, 14725, 27835, 36625, 45415, 73625, 139175, 172577, 227075, 695875, 862885, 1135375, 4314425, 21572125]

約数ペア:

[(1, 21572125), (5, 4314425), (19, 1135375), (25, 862885), (31, 695875), (95, 227075), (125, 172577), (155, 139175), (293, 73625), (475, 45415), (589, 36625), (775, 27835), (1465, 14725), (2375, 9083), (2945, 7325), (3875, 5567)]