19996020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10099}}^1$

素因数の和:10125

約数の個数: 72

約数和(自身を含む): 66175200

約数和(自身を除く): 46179180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10099, 20198, 30297, 40396, 50495, 60594, 90891, 100990, 111089, 121188, 151485, 181782, 201980, 222178, 302970, 333267, 363564, 444356, 454455, 555445, 605940, 666534, 908910, 999801, 1110890, 1333068, 1666335, 1817820, 1999602, 2221780, 3332670, 3999204, 4999005, 6665340, 9998010, 19996020]

約数ペア:

[(1, 19996020), (2, 9998010), (3, 6665340), (4, 4999005), (5, 3999204), (6, 3332670), (9, 2221780), (10, 1999602), (11, 1817820), (12, 1666335), (15, 1333068), (18, 1110890), (20, 999801), (22, 908910), (30, 666534), (33, 605940), (36, 555445), (44, 454455), (45, 444356), (55, 363564), (60, 333267), (66, 302970), (90, 222178), (99, 201980), (110, 181782), (132, 151485), (165, 121188), (180, 111089), (198, 100990), (220, 90891), (330, 60594), (396, 50495), (495, 40396), (660, 30297), (990, 20198), (1980, 10099)]