81378945

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{26209}}^1$

素因数の和:26246

約数の個数: 32

約数和(自身を含む): 150969600

約数和(自身を除く): 69590655

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 26209, 78627, 131045, 235881, 393135, 602807, 707643, 1179405, 1808421, 3014035, 3538215, 5425263, 9042105, 16275789, 27126315, 81378945]

約数ペア:

[(1, 81378945), (3, 27126315), (5, 16275789), (9, 9042105), (15, 5425263), (23, 3538215), (27, 3014035), (45, 1808421), (69, 1179405), (115, 707643), (135, 602807), (207, 393135), (345, 235881), (621, 131045), (1035, 78627), (3105, 26209)]