18691504

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1231}}^1$

素因数の和:1325

約数の個数: 40

約数和(自身を含む): 39566912

約数和(自身を除く): 20875408

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1231, 1898, 2462, 3796, 4924, 7592, 9848, 15184, 16003, 19696, 32006, 64012, 89863, 128024, 179726, 256048, 359452, 718904, 1168219, 1437808, 2336438, 4672876, 9345752, 18691504]

約数ペア:

[(1, 18691504), (2, 9345752), (4, 4672876), (8, 2336438), (13, 1437808), (16, 1168219), (26, 718904), (52, 359452), (73, 256048), (104, 179726), (146, 128024), (208, 89863), (292, 64012), (584, 32006), (949, 19696), (1168, 16003), (1231, 15184), (1898, 9848), (2462, 7592), (3796, 4924)]