130831640

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{16603}}^1$

素因数の和:16811

約数の個数: 32

約数和(自身を含む): 295883280

約数和(自身を除く): 165051640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 16603, 33206, 66412, 83015, 132824, 166030, 332060, 664120, 3270791, 6541582, 13083164, 16353955, 26166328, 32707910, 65415820, 130831640]

約数ペア:

[(1, 130831640), (2, 65415820), (4, 32707910), (5, 26166328), (8, 16353955), (10, 13083164), (20, 6541582), (40, 3270791), (197, 664120), (394, 332060), (788, 166030), (985, 132824), (1576, 83015), (1970, 66412), (3940, 33206), (7880, 16603)]