20806940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 55641600

約数和(自身を除く): 34834660

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 59, 70, 77, 110, 118, 140, 154, 220, 229, 236, 295, 308, 385, 413, 458, 590, 649, 770, 826, 916, 1145, 1180, 1298, 1540, 1603, 1652, 2065, 2290, 2519, 2596, 3206, 3245, 4130, 4543, 4580, 5038, 6412, 6490, 8015, 8260, 9086, 10076, 12595, 12980, 13511, 16030, 17633, 18172, 22715, 25190, 27022, 32060, 35266, 45430, 50380, 54044, 67555, 70532, 88165, 90860, 94577, 135110, 148621, 176330, 189154, 270220, 297242, 352660, 378308, 472885, 594484, 743105, 945770, 1040347, 1486210, 1891540, 2080694, 2972420, 4161388, 5201735, 10403470, 20806940]

約数ペア:

[(1, 20806940), (2, 10403470), (4, 5201735), (5, 4161388), (7, 2972420), (10, 2080694), (11, 1891540), (14, 1486210), (20, 1040347), (22, 945770), (28, 743105), (35, 594484), (44, 472885), (55, 378308), (59, 352660), (70, 297242), (77, 270220), (110, 189154), (118, 176330), (140, 148621), (154, 135110), (220, 94577), (229, 90860), (236, 88165), (295, 70532), (308, 67555), (385, 54044), (413, 50380), (458, 45430), (590, 35266), (649, 32060), (770, 27022), (826, 25190), (916, 22715), (1145, 18172), (1180, 17633), (1298, 16030), (1540, 13511), (1603, 12980), (1652, 12595), (2065, 10076), (2290, 9086), (2519, 8260), (2596, 8015), (3206, 6490), (3245, 6412), (4130, 5038), (4543, 4580)]