19625728

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2473}}^1$

素因数の和:2520

約数の個数: 36

約数和(自身を含む): 40454848

約数和(自身を除く): 20829120

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2473, 3968, 4946, 7936, 9892, 19784, 39568, 76663, 79136, 153326, 158272, 306652, 316544, 613304, 633088, 1226608, 2453216, 4906432, 9812864, 19625728]

約数ペア:

[(1, 19625728), (2, 9812864), (4, 4906432), (8, 2453216), (16, 1226608), (31, 633088), (32, 613304), (62, 316544), (64, 306652), (124, 158272), (128, 153326), (248, 79136), (256, 76663), (496, 39568), (992, 19784), (1984, 9892), (2473, 7936), (3968, 4946)]