2780955

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2131}}^1$

素因数の和:2171

約数の個数: 24

約数和(自身を含む): 4988880

約数和(自身を除く): 2207925

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 2131, 6393, 10655, 19179, 31965, 61799, 95895, 185397, 308995, 556191, 926985, 2780955]

約数ペア:

[(1, 2780955), (3, 926985), (5, 556191), (9, 308995), (15, 185397), (29, 95895), (45, 61799), (87, 31965), (145, 19179), (261, 10655), (435, 6393), (1305, 2131)]