388595440

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{12487}}^1$

素因数の和:12889

約数の個数: 40

約数和(自身を含む): 905879520

約数和(自身を除く): 517284080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 6224, 7780, 12487, 15560, 24974, 31120, 49948, 62435, 99896, 124870, 199792, 249740, 499480, 998960, 4857443, 9714886, 19429772, 24287215, 38859544, 48574430, 77719088, 97148860, 194297720, 388595440]

約数ペア:

[(1, 388595440), (2, 194297720), (4, 97148860), (5, 77719088), (8, 48574430), (10, 38859544), (16, 24287215), (20, 19429772), (40, 9714886), (80, 4857443), (389, 998960), (778, 499480), (1556, 249740), (1945, 199792), (3112, 124870), (3890, 99896), (6224, 62435), (7780, 49948), (12487, 31120), (15560, 24974)]