80231875

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:193

約数の個数: 40

約数和(自身を含む): 107065728

約数和(自身を除く): 26833853

約数列:

[1, 5, 25, 31, 41, 101, 125, 155, 205, 505, 625, 775, 1025, 1271, 2525, 3131, 3875, 4141, 5125, 6355, 12625, 15655, 19375, 20705, 25625, 31775, 63125, 78275, 103525, 128371, 158875, 391375, 517625, 641855, 794375, 1956875, 2588125, 3209275, 16046375, 80231875]

約数ペア:

[(1, 80231875), (5, 16046375), (25, 3209275), (31, 2588125), (41, 1956875), (101, 794375), (125, 641855), (155, 517625), (205, 391375), (505, 158875), (625, 128371), (775, 103525), (1025, 78275), (1271, 63125), (2525, 31775), (3131, 25625), (3875, 20705), (4141, 19375), (5125, 15655), (6355, 12625)]