28218580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108533}}^1$

素因数の和:108555

約数の個数: 24

約数和(自身を含む): 63817992

約数和(自身を除く): 35599412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108533, 217066, 434132, 542665, 1085330, 1410929, 2170660, 2821858, 5643716, 7054645, 14109290, 28218580]

約数ペア:

[(1, 28218580), (2, 14109290), (4, 7054645), (5, 5643716), (10, 2821858), (13, 2170660), (20, 1410929), (26, 1085330), (52, 542665), (65, 434132), (130, 217066), (260, 108533)]