2011189905

素因数分解:

$3^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{5011}}^1$

素因数の和:6019

約数の個数: 40

約数和(自身を含む): 3609602304

約数和(自身を除く): 1598412399

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 991, 2973, 4955, 5011, 8919, 14865, 15033, 25055, 26757, 44595, 45099, 75165, 80271, 133785, 135297, 225495, 401355, 405891, 676485, 2029455, 4965901, 14897703, 24829505, 44693109, 74488515, 134079327, 223465545, 402237981, 670396635, 2011189905]

約数ペア:

[(1, 2011189905), (3, 670396635), (5, 402237981), (9, 223465545), (15, 134079327), (27, 74488515), (45, 44693109), (81, 24829505), (135, 14897703), (405, 4965901), (991, 2029455), (2973, 676485), (4955, 405891), (5011, 401355), (8919, 225495), (14865, 135297), (15033, 133785), (25055, 80271), (26757, 75165), (44595, 45099)]