20758280

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7109}}^1$

素因数の和:7193

約数の個数: 32

約数和(自身を含む): 47352600

約数和(自身を除く): 26594320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7109, 14218, 28436, 35545, 56872, 71090, 142180, 284360, 518957, 1037914, 2075828, 2594785, 4151656, 5189570, 10379140, 20758280]

約数ペア:

[(1, 20758280), (2, 10379140), (4, 5189570), (5, 4151656), (8, 2594785), (10, 2075828), (20, 1037914), (40, 518957), (73, 284360), (146, 142180), (292, 71090), (365, 56872), (584, 35545), (730, 28436), (1460, 14218), (2920, 7109)]