20818215

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4673}}^1$

素因数の和:4701

約数の個数: 40

約数和(自身を含む): 40719888

約数和(自身を除く): 19901673

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4673, 14019, 23365, 42057, 51403, 70095, 126171, 154209, 210285, 257015, 378513, 462627, 630855, 771045, 1387881, 1892565, 2313135, 4163643, 6939405, 20818215]

約数ペア:

[(1, 20818215), (3, 6939405), (5, 4163643), (9, 2313135), (11, 1892565), (15, 1387881), (27, 771045), (33, 630855), (45, 462627), (55, 378513), (81, 257015), (99, 210285), (135, 154209), (165, 126171), (297, 70095), (405, 51403), (495, 42057), (891, 23365), (1485, 14019), (4455, 4673)]