20647560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7481}}^1$

素因数の和:7518

約数の個数: 64

約数和(自身を含む): 64644480

約数和(自身を除く): 43996920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7481, 14962, 22443, 29924, 37405, 44886, 59848, 74810, 89772, 112215, 149620, 172063, 179544, 224430, 299240, 344126, 448860, 516189, 688252, 860315, 897720, 1032378, 1376504, 1720630, 2064756, 2580945, 3441260, 4129512, 5161890, 6882520, 10323780, 20647560]

約数ペア:

[(1, 20647560), (2, 10323780), (3, 6882520), (4, 5161890), (5, 4129512), (6, 3441260), (8, 2580945), (10, 2064756), (12, 1720630), (15, 1376504), (20, 1032378), (23, 897720), (24, 860315), (30, 688252), (40, 516189), (46, 448860), (60, 344126), (69, 299240), (92, 224430), (115, 179544), (120, 172063), (138, 149620), (184, 112215), (230, 89772), (276, 74810), (345, 59848), (460, 44886), (552, 37405), (690, 29924), (920, 22443), (1380, 14962), (2760, 7481)]