219551420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{997961}}^1$

素因数の和:997981

約数の個数: 24

約数和(自身を含む): 502972848

約数和(自身を除く): 283421428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 997961, 1995922, 3991844, 4989805, 9979610, 10977571, 19959220, 21955142, 43910284, 54887855, 109775710, 219551420]

約数ペア:

[(1, 219551420), (2, 109775710), (4, 54887855), (5, 43910284), (10, 21955142), (11, 19959220), (20, 10977571), (22, 9979610), (44, 4989805), (55, 3991844), (110, 1995922), (220, 997961)]