199680920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{161033}}^1$

素因数の和:161075

約数の個数: 32

約数和(自身を含む): 463777920

約数和(自身を除く): 264097000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 161033, 322066, 644132, 805165, 1288264, 1610330, 3220660, 4992023, 6441320, 9984046, 19968092, 24960115, 39936184, 49920230, 99840460, 199680920]

約数ペア:

[(1, 199680920), (2, 99840460), (4, 49920230), (5, 39936184), (8, 24960115), (10, 19968092), (20, 9984046), (31, 6441320), (40, 4992023), (62, 3220660), (124, 1610330), (155, 1288264), (248, 805165), (310, 644132), (620, 322066), (1240, 161033)]