18788355

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2017}}^1$

素因数の和:2057

約数の個数: 40

約数和(自身を含む): 35161632

約数和(自身を除く): 16373277

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2017, 3105, 6051, 9315, 10085, 18153, 30255, 46391, 54459, 90765, 139173, 163377, 231955, 272295, 417519, 695865, 816885, 1252557, 2087595, 3757671, 6262785, 18788355]

約数ペア:

[(1, 18788355), (3, 6262785), (5, 3757671), (9, 2087595), (15, 1252557), (23, 816885), (27, 695865), (45, 417519), (69, 272295), (81, 231955), (115, 163377), (135, 139173), (207, 90765), (345, 54459), (405, 46391), (621, 30255), (1035, 18153), (1863, 10085), (2017, 9315), (3105, 6051)]