199960760

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{18047}}^1$

素因数の和:18335

約数の個数: 32

約数和(自身を含む): 451560960

約数和(自身を除く): 251600200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1385, 2216, 2770, 5540, 11080, 18047, 36094, 72188, 90235, 144376, 180470, 360940, 721880, 4999019, 9998038, 19996076, 24995095, 39992152, 49990190, 99980380, 199960760]

約数ペア:

[(1, 199960760), (2, 99980380), (4, 49990190), (5, 39992152), (8, 24995095), (10, 19996076), (20, 9998038), (40, 4999019), (277, 721880), (554, 360940), (1108, 180470), (1385, 144376), (2216, 90235), (2770, 72188), (5540, 36094), (11080, 18047)]