247483640

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{12601}}^1$

素因数の和:13103

約数の個数: 32

約数和(自身を含む): 558016560

約数和(自身を除く): 310532920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 12601, 19640, 25202, 50404, 63005, 100808, 126010, 252020, 504040, 6187091, 12374182, 24748364, 30935455, 49496728, 61870910, 123741820, 247483640]

約数ペア:

[(1, 247483640), (2, 123741820), (4, 61870910), (5, 49496728), (8, 30935455), (10, 24748364), (20, 12374182), (40, 6187091), (491, 504040), (982, 252020), (1964, 126010), (2455, 100808), (3928, 63005), (4910, 50404), (9820, 25202), (12601, 19640)]