20705024

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2609}}^1$

素因数の和:2656

約数の個数: 36

約数和(自身を含む): 42678720

約数和(自身を除く): 21973696

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2609, 3968, 5218, 7936, 10436, 20872, 41744, 80879, 83488, 161758, 166976, 323516, 333952, 647032, 667904, 1294064, 2588128, 5176256, 10352512, 20705024]

約数ペア:

[(1, 20705024), (2, 10352512), (4, 5176256), (8, 2588128), (16, 1294064), (31, 667904), (32, 647032), (62, 333952), (64, 323516), (124, 166976), (128, 161758), (248, 83488), (256, 80879), (496, 41744), (992, 20872), (1984, 10436), (2609, 7936), (3968, 5218)]