20543848

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{787}}^1$

素因数の和:1057

約数の個数: 32

約数和(自身を含む): 41700960

約数和(自身を除く): 21157112

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 251, 502, 787, 1004, 1574, 2008, 3148, 3263, 6296, 6526, 10231, 13052, 20462, 26104, 40924, 81848, 197537, 395074, 790148, 1580296, 2567981, 5135962, 10271924, 20543848]

約数ペア:

[(1, 20543848), (2, 10271924), (4, 5135962), (8, 2567981), (13, 1580296), (26, 790148), (52, 395074), (104, 197537), (251, 81848), (502, 40924), (787, 26104), (1004, 20462), (1574, 13052), (2008, 10231), (3148, 6526), (3263, 6296)]