21585555

素因数分解:

$3^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1259}}^1$

素因数の和:1400

約数の個数: 32

約数和(自身を含む): 38707200

約数和(自身を除く): 17121645

約数列:

[1, 3, 5, 9, 15, 27, 45, 127, 135, 381, 635, 1143, 1259, 1905, 3429, 3777, 5715, 6295, 11331, 17145, 18885, 33993, 56655, 159893, 169965, 479679, 799465, 1439037, 2398395, 4317111, 7195185, 21585555]

約数ペア:

[(1, 21585555), (3, 7195185), (5, 4317111), (9, 2398395), (15, 1439037), (27, 799465), (45, 479679), (127, 169965), (135, 159893), (381, 56655), (635, 33993), (1143, 18885), (1259, 17145), (1905, 11331), (3429, 6295), (3777, 5715)]