20581245

素因数分解:

$3^2\times 5^1\times {\mathrm{601}}^1\times {\mathrm{761}}^1$

素因数の和:1373

約数の個数: 24

約数和(自身を含む): 35780472

約数和(自身を除く): 15199227

約数列:

[1, 3, 5, 9, 15, 45, 601, 761, 1803, 2283, 3005, 3805, 5409, 6849, 9015, 11415, 27045, 34245, 457361, 1372083, 2286805, 4116249, 6860415, 20581245]

約数ペア:

[(1, 20581245), (3, 6860415), (5, 4116249), (9, 2286805), (15, 1372083), (45, 457361), (601, 34245), (761, 27045), (1803, 11415), (2283, 9015), (3005, 6849), (3805, 5409)]