20996125

素因数分解:

$5^3\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:214

約数の個数: 32

約数和(自身を含む): 28005120

約数和(自身を除く): 7008995

約数列:

[1, 5, 23, 25, 67, 109, 115, 125, 335, 545, 575, 1541, 1675, 2507, 2725, 2875, 7303, 7705, 8375, 12535, 13625, 36515, 38525, 62675, 167969, 182575, 192625, 313375, 839845, 912875, 4199225, 20996125]

約数ペア:

[(1, 20996125), (5, 4199225), (23, 912875), (25, 839845), (67, 313375), (109, 192625), (115, 182575), (125, 167969), (335, 62675), (545, 38525), (575, 36515), (1541, 13625), (1675, 12535), (2507, 8375), (2725, 7705), (2875, 7303)]