12731740

素因数分解:

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

素因数の和:658

約数の個数: 48

約数和(自身を含む): 30772224

約数和(自身を除く): 18040484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 431, 844, 862, 1055, 1477, 1724, 2110, 2155, 2954, 3017, 4220, 4310, 5908, 6034, 7385, 8620, 12068, 14770, 15085, 29540, 30170, 60340, 90941, 181882, 363764, 454705, 636587, 909410, 1273174, 1818820, 2546348, 3182935, 6365870, 12731740]

約数ペア:

[(1, 12731740), (2, 6365870), (4, 3182935), (5, 2546348), (7, 1818820), (10, 1273174), (14, 909410), (20, 636587), (28, 454705), (35, 363764), (70, 181882), (140, 90941), (211, 60340), (422, 30170), (431, 29540), (844, 15085), (862, 14770), (1055, 12068), (1477, 8620), (1724, 7385), (2110, 6034), (2155, 5908), (2954, 4310), (3017, 4220)]