81173520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{112741}}^1$

素因数の和:112760

約数の個数: 60

約数和(自身を含む): 272610156

約数和(自身を除く): 191436636

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 112741, 225482, 338223, 450964, 563705, 676446, 901928, 1014669, 1127410, 1352892, 1691115, 1803856, 2029338, 2254820, 2705784, 3382230, 4058676, 4509640, 5073345, 5411568, 6764460, 8117352, 9019280, 10146690, 13528920, 16234704, 20293380, 27057840, 40586760, 81173520]

約数ペア:

[(1, 81173520), (2, 40586760), (3, 27057840), (4, 20293380), (5, 16234704), (6, 13528920), (8, 10146690), (9, 9019280), (10, 8117352), (12, 6764460), (15, 5411568), (16, 5073345), (18, 4509640), (20, 4058676), (24, 3382230), (30, 2705784), (36, 2254820), (40, 2029338), (45, 1803856), (48, 1691115), (60, 1352892), (72, 1127410), (80, 1014669), (90, 901928), (120, 676446), (144, 563705), (180, 450964), (240, 338223), (360, 225482), (720, 112741)]