18798416

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12911}}^1$

素因数の和:12939

約数の個数: 40

約数和(自身を含む): 44830464

約数和(自身を除く): 26032048

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 12911, 25822, 51644, 90377, 103288, 167843, 180754, 206576, 335686, 361508, 671372, 723016, 1174901, 1342744, 1446032, 2349802, 2685488, 4699604, 9399208, 18798416]

約数ペア:

[(1, 18798416), (2, 9399208), (4, 4699604), (7, 2685488), (8, 2349802), (13, 1446032), (14, 1342744), (16, 1174901), (26, 723016), (28, 671372), (52, 361508), (56, 335686), (91, 206576), (104, 180754), (112, 167843), (182, 103288), (208, 90377), (364, 51644), (728, 25822), (1456, 12911)]