77947515

素因数分解:

$3^4\times 5^1\times {\mathrm{192463}}^1$

素因数の和:192480

約数の個数: 20

約数和(自身を含む): 139728864

約数和(自身を除く): 61781349

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 192463, 577389, 962315, 1732167, 2886945, 5196501, 8660835, 15589503, 25982505, 77947515]

約数ペア:

[(1, 77947515), (3, 25982505), (5, 15589503), (9, 8660835), (15, 5196501), (27, 2886945), (45, 1732167), (81, 962315), (135, 577389), (405, 192463)]