20798610160

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{835957}}^1$

素因数の和:836281

約数の個数: 40

約数和(自身を含む): 48512314656

約数和(自身を除く): 27713704496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 1244, 1555, 2488, 3110, 4976, 6220, 12440, 24880, 835957, 1671914, 3343828, 4179785, 6687656, 8359570, 13375312, 16719140, 33438280, 66876560, 259982627, 519965254, 1039930508, 1299913135, 2079861016, 2599826270, 4159722032, 5199652540, 10399305080, 20798610160]

約数ペア:

[(1, 20798610160), (2, 10399305080), (4, 5199652540), (5, 4159722032), (8, 2599826270), (10, 2079861016), (16, 1299913135), (20, 1039930508), (40, 519965254), (80, 259982627), (311, 66876560), (622, 33438280), (1244, 16719140), (1555, 13375312), (2488, 8359570), (3110, 6687656), (4976, 4179785), (6220, 3343828), (12440, 1671914), (24880, 835957)]