19581320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{233}}^1$

素因数の和:446

約数の個数: 64

約数和(自身を含む): 48522240

約数和(自身を除く): 28940920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 191, 220, 233, 382, 440, 466, 764, 932, 955, 1165, 1528, 1864, 1910, 2101, 2330, 2563, 3820, 4202, 4660, 5126, 7640, 8404, 9320, 10252, 10505, 12815, 16808, 20504, 21010, 25630, 42020, 44503, 51260, 84040, 89006, 102520, 178012, 222515, 356024, 445030, 489533, 890060, 979066, 1780120, 1958132, 2447665, 3916264, 4895330, 9790660, 19581320]

約数ペア:

[(1, 19581320), (2, 9790660), (4, 4895330), (5, 3916264), (8, 2447665), (10, 1958132), (11, 1780120), (20, 979066), (22, 890060), (40, 489533), (44, 445030), (55, 356024), (88, 222515), (110, 178012), (191, 102520), (220, 89006), (233, 84040), (382, 51260), (440, 44503), (466, 42020), (764, 25630), (932, 21010), (955, 20504), (1165, 16808), (1528, 12815), (1864, 10505), (1910, 10252), (2101, 9320), (2330, 8404), (2563, 7640), (3820, 5126), (4202, 4660)]