20412405

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3877}}^1$

素因数の和:3907

約数の個数: 40

約数和(自身を含む): 39415992

約数和(自身を除く): 19003587

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 3877, 5265, 11631, 19385, 34893, 50401, 58155, 104679, 151203, 174465, 252005, 314037, 453609, 523395, 756015, 1360827, 1570185, 2268045, 4082481, 6804135, 20412405]

約数ペア:

[(1, 20412405), (3, 6804135), (5, 4082481), (9, 2268045), (13, 1570185), (15, 1360827), (27, 756015), (39, 523395), (45, 453609), (65, 314037), (81, 252005), (117, 174465), (135, 151203), (195, 104679), (351, 58155), (405, 50401), (585, 34893), (1053, 19385), (1755, 11631), (3877, 5265)]