18178960

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1019}}^1$

素因数の和:1255

約数の個数: 40

約数和(自身を含む): 42497280

約数和(自身を除く): 24318320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1019, 1115, 1784, 2038, 2230, 3568, 4076, 4460, 5095, 8152, 8920, 10190, 16304, 17840, 20380, 40760, 81520, 227237, 454474, 908948, 1136185, 1817896, 2272370, 3635792, 4544740, 9089480, 18178960]

約数ペア:

[(1, 18178960), (2, 9089480), (4, 4544740), (5, 3635792), (8, 2272370), (10, 1817896), (16, 1136185), (20, 908948), (40, 454474), (80, 227237), (223, 81520), (446, 40760), (892, 20380), (1019, 17840), (1115, 16304), (1784, 10190), (2038, 8920), (2230, 8152), (3568, 5095), (4076, 4460)]