28253720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{409}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 69962400

約数和(自身を除く): 41708680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 314, 409, 440, 628, 785, 818, 1256, 1570, 1636, 1727, 2045, 3140, 3272, 3454, 4090, 4499, 6280, 6908, 8180, 8635, 8998, 13816, 16360, 17270, 17996, 22495, 34540, 35992, 44990, 64213, 69080, 89980, 128426, 179960, 256852, 321065, 513704, 642130, 706343, 1284260, 1412686, 2568520, 2825372, 3531715, 5650744, 7063430, 14126860, 28253720]

約数ペア:

[(1, 28253720), (2, 14126860), (4, 7063430), (5, 5650744), (8, 3531715), (10, 2825372), (11, 2568520), (20, 1412686), (22, 1284260), (40, 706343), (44, 642130), (55, 513704), (88, 321065), (110, 256852), (157, 179960), (220, 128426), (314, 89980), (409, 69080), (440, 64213), (628, 44990), (785, 35992), (818, 34540), (1256, 22495), (1570, 17996), (1636, 17270), (1727, 16360), (2045, 13816), (3140, 8998), (3272, 8635), (3454, 8180), (4090, 6908), (4499, 6280)]