13781240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31321}}^1$

素因数の和:31343

約数の個数: 32

約数和(自身を含む): 33827760

約数和(自身を除く): 20046520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 31321, 62642, 125284, 156605, 250568, 313210, 344531, 626420, 689062, 1252840, 1378124, 1722655, 2756248, 3445310, 6890620, 13781240]

約数ペア:

[(1, 13781240), (2, 6890620), (4, 3445310), (5, 2756248), (8, 1722655), (10, 1378124), (11, 1252840), (20, 689062), (22, 626420), (40, 344531), (44, 313210), (55, 250568), (88, 156605), (110, 125284), (220, 62642), (440, 31321)]