18689968

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1031}}^1$

素因数の和:1153

約数の個数: 40

約数和(自身を含む): 39926016

約数和(自身を除く): 21236048

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 103, 176, 206, 412, 824, 1031, 1133, 1648, 2062, 2266, 4124, 4532, 8248, 9064, 11341, 16496, 18128, 22682, 45364, 90728, 106193, 181456, 212386, 424772, 849544, 1168123, 1699088, 2336246, 4672492, 9344984, 18689968]

約数ペア:

[(1, 18689968), (2, 9344984), (4, 4672492), (8, 2336246), (11, 1699088), (16, 1168123), (22, 849544), (44, 424772), (88, 212386), (103, 181456), (176, 106193), (206, 90728), (412, 45364), (824, 22682), (1031, 18128), (1133, 16496), (1648, 11341), (2062, 9064), (2266, 8248), (4124, 4532)]