199642790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{644009}}^1$

素因数の和:644047

約数の個数: 16

約数和(自身を含む): 370949760

約数和(自身を除く): 171306970

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 644009, 1288018, 3220045, 6440090, 19964279, 39928558, 99821395, 199642790]

約数ペア:

[(1, 199642790), (2, 99821395), (5, 39928558), (10, 19964279), (31, 6440090), (62, 3220045), (155, 1288018), (310, 644009)]