20660985

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12409}}^1$

素因数の和:12457

約数の個数: 24

約数和(自身を含む): 36783240

約数和(自身を除く): 16122255

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12409, 37227, 62045, 111681, 186135, 459133, 558405, 1377399, 2295665, 4132197, 6886995, 20660985]

約数ペア:

[(1, 20660985), (3, 6886995), (5, 4132197), (9, 2295665), (15, 1377399), (37, 558405), (45, 459133), (111, 186135), (185, 111681), (333, 62045), (555, 37227), (1665, 12409)]