138891280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157831}}^1$

素因数の和:157855

約数の個数: 40

約数和(自身を含む): 352281024

約数和(自身を除く): 213389744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 157831, 315662, 631324, 789155, 1262648, 1578310, 1736141, 2525296, 3156620, 3472282, 6313240, 6944564, 8680705, 12626480, 13889128, 17361410, 27778256, 34722820, 69445640, 138891280]

約数ペア:

[(1, 138891280), (2, 69445640), (4, 34722820), (5, 27778256), (8, 17361410), (10, 13889128), (11, 12626480), (16, 8680705), (20, 6944564), (22, 6313240), (40, 3472282), (44, 3156620), (55, 2525296), (80, 1736141), (88, 1578310), (110, 1262648), (176, 789155), (220, 631324), (440, 315662), (880, 157831)]