20403456

素因数分解:

$2^8\times 3^1\times {\mathrm{31}}^1\times {\mathrm{857}}^1$

素因数の和:907

約数の個数: 72

約数和(自身を含む): 56120064

約数和(自身を除く): 35716608

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 32, 48, 62, 64, 93, 96, 124, 128, 186, 192, 248, 256, 372, 384, 496, 744, 768, 857, 992, 1488, 1714, 1984, 2571, 2976, 3428, 3968, 5142, 5952, 6856, 7936, 10284, 11904, 13712, 20568, 23808, 26567, 27424, 41136, 53134, 54848, 79701, 82272, 106268, 109696, 159402, 164544, 212536, 219392, 318804, 329088, 425072, 637608, 658176, 850144, 1275216, 1700288, 2550432, 3400576, 5100864, 6801152, 10201728, 20403456]

約数ペア:

[(1, 20403456), (2, 10201728), (3, 6801152), (4, 5100864), (6, 3400576), (8, 2550432), (12, 1700288), (16, 1275216), (24, 850144), (31, 658176), (32, 637608), (48, 425072), (62, 329088), (64, 318804), (93, 219392), (96, 212536), (124, 164544), (128, 159402), (186, 109696), (192, 106268), (248, 82272), (256, 79701), (372, 54848), (384, 53134), (496, 41136), (744, 27424), (768, 26567), (857, 23808), (992, 20568), (1488, 13712), (1714, 11904), (1984, 10284), (2571, 7936), (2976, 6856), (3428, 5952), (3968, 5142)]