28421978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:422

約数の個数: 32

約数和(自身を含む): 47900160

約数和(自身を除く): 19478182

約数列:

[1, 2, 13, 26, 31, 62, 179, 197, 358, 394, 403, 806, 2327, 2561, 4654, 5122, 5549, 6107, 11098, 12214, 35263, 70526, 72137, 79391, 144274, 158782, 458419, 916838, 1093153, 2186306, 14210989, 28421978]

約数ペア:

[(1, 28421978), (2, 14210989), (13, 2186306), (26, 1093153), (31, 916838), (62, 458419), (179, 158782), (197, 144274), (358, 79391), (394, 72137), (403, 70526), (806, 35263), (2327, 12214), (2561, 11098), (4654, 6107), (5122, 5549)]