28090010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{1249}}^1$

素因数の和:1442

約数の個数: 32

約数和(自身を含む): 54810000

約数和(自身を除く): 26719990

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 173, 346, 865, 1249, 1730, 2249, 2498, 4498, 6245, 11245, 12490, 16237, 22490, 32474, 81185, 162370, 216077, 432154, 1080385, 2160770, 2809001, 5618002, 14045005, 28090010]

約数ペア:

[(1, 28090010), (2, 14045005), (5, 5618002), (10, 2809001), (13, 2160770), (26, 1080385), (65, 432154), (130, 216077), (173, 162370), (346, 81185), (865, 32474), (1249, 22490), (1730, 16237), (2249, 12490), (2498, 11245), (4498, 6245)]