7987640

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{503}}^1$

素因数の和:911

約数の個数: 32

約数和(自身を含む): 18053280

約数和(自身を除く): 10065640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 503, 794, 1006, 1588, 1985, 2012, 2515, 3176, 3970, 4024, 5030, 7940, 10060, 15880, 20120, 199691, 399382, 798764, 998455, 1597528, 1996910, 3993820, 7987640]

約数ペア:

[(1, 7987640), (2, 3993820), (4, 1996910), (5, 1597528), (8, 998455), (10, 798764), (20, 399382), (40, 199691), (397, 20120), (503, 15880), (794, 10060), (1006, 7940), (1588, 5030), (1985, 4024), (2012, 3970), (2515, 3176)]