18156825

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{727}}^1$

素因数の和:783

約数の個数: 48

約数和(自身を含む): 34303360

約数和(自身を除く): 16146535

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 727, 925, 999, 1665, 2181, 2775, 3635, 4995, 6543, 8325, 10905, 18175, 19629, 24975, 26899, 32715, 54525, 80697, 98145, 134495, 163575, 242091, 403485, 490725, 672475, 726273, 1210455, 2017425, 3631365, 6052275, 18156825]

約数ペア:

[(1, 18156825), (3, 6052275), (5, 3631365), (9, 2017425), (15, 1210455), (25, 726273), (27, 672475), (37, 490725), (45, 403485), (75, 242091), (111, 163575), (135, 134495), (185, 98145), (225, 80697), (333, 54525), (555, 32715), (675, 26899), (727, 24975), (925, 19629), (999, 18175), (1665, 10905), (2181, 8325), (2775, 6543), (3635, 4995)]