20370784

素因数分解:

$2^5\times 7^1\times {\mathrm{211}}^1\times {\mathrm{431}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 46158336

約数和(自身を除く): 25787552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 211, 224, 422, 431, 844, 862, 1477, 1688, 1724, 2954, 3017, 3376, 3448, 5908, 6034, 6752, 6896, 11816, 12068, 13792, 23632, 24136, 47264, 48272, 90941, 96544, 181882, 363764, 636587, 727528, 1273174, 1455056, 2546348, 2910112, 5092696, 10185392, 20370784]

約数ペア:

[(1, 20370784), (2, 10185392), (4, 5092696), (7, 2910112), (8, 2546348), (14, 1455056), (16, 1273174), (28, 727528), (32, 636587), (56, 363764), (112, 181882), (211, 96544), (224, 90941), (422, 48272), (431, 47264), (844, 24136), (862, 23632), (1477, 13792), (1688, 12068), (1724, 11816), (2954, 6896), (3017, 6752), (3376, 6034), (3448, 5908)]