20747375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:296

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 8006545

約数列:

[1, 5, 11, 25, 55, 79, 125, 191, 275, 395, 869, 955, 1375, 1975, 2101, 4345, 4775, 9875, 10505, 15089, 21725, 23875, 52525, 75445, 108625, 165979, 262625, 377225, 829895, 1886125, 4149475, 20747375]

約数ペア:

[(1, 20747375), (5, 4149475), (11, 1886125), (25, 829895), (55, 377225), (79, 262625), (125, 165979), (191, 108625), (275, 75445), (395, 52525), (869, 23875), (955, 21725), (1375, 15089), (1975, 10505), (2101, 9875), (4345, 4775)]