28861100

素因数分解:

$2^2\times 5^2\times {\mathrm{257}}^1\times {\mathrm{1123}}^1$

素因数の和:1394

約数の個数: 36

約数和(自身を含む): 62928264

約数和(自身を除く): 34067164

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 257, 514, 1028, 1123, 1285, 2246, 2570, 4492, 5140, 5615, 6425, 11230, 12850, 22460, 25700, 28075, 56150, 112300, 288611, 577222, 1154444, 1443055, 2886110, 5772220, 7215275, 14430550, 28861100]

約数ペア:

[(1, 28861100), (2, 14430550), (4, 7215275), (5, 5772220), (10, 2886110), (20, 1443055), (25, 1154444), (50, 577222), (100, 288611), (257, 112300), (514, 56150), (1028, 28075), (1123, 25700), (1285, 22460), (2246, 12850), (2570, 11230), (4492, 6425), (5140, 5615)]