78842680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281581}}^1$

素因数の和:281599

約数の個数: 32

約数和(自身を含む): 202739040

約数和(自身を除く): 123896360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281581, 563162, 1126324, 1407905, 1971067, 2252648, 2815810, 3942134, 5631620, 7884268, 9855335, 11263240, 15768536, 19710670, 39421340, 78842680]

約数ペア:

[(1, 78842680), (2, 39421340), (4, 19710670), (5, 15768536), (7, 11263240), (8, 9855335), (10, 7884268), (14, 5631620), (20, 3942134), (28, 2815810), (35, 2252648), (40, 1971067), (56, 1407905), (70, 1126324), (140, 563162), (280, 281581)]