20768865

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1459}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 36301440

約数和(自身を除く): 15532575

約数列:

[1, 3, 5, 13, 15, 39, 65, 73, 195, 219, 365, 949, 1095, 1459, 2847, 4377, 4745, 7295, 14235, 18967, 21885, 56901, 94835, 106507, 284505, 319521, 532535, 1384591, 1597605, 4153773, 6922955, 20768865]

約数ペア:

[(1, 20768865), (3, 6922955), (5, 4153773), (13, 1597605), (15, 1384591), (39, 532535), (65, 319521), (73, 284505), (195, 106507), (219, 94835), (365, 56901), (949, 21885), (1095, 18967), (1459, 14235), (2847, 7295), (4377, 4745)]