80361340

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{193}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 172085760

約数和(自身を除く): 91724420

約数列:

[1, 2, 4, 5, 10, 20, 109, 191, 193, 218, 382, 386, 436, 545, 764, 772, 955, 965, 1090, 1910, 1930, 2180, 3820, 3860, 20819, 21037, 36863, 41638, 42074, 73726, 83276, 84148, 104095, 105185, 147452, 184315, 208190, 210370, 368630, 416380, 420740, 737260, 4018067, 8036134, 16072268, 20090335, 40180670, 80361340]

約数ペア:

[(1, 80361340), (2, 40180670), (4, 20090335), (5, 16072268), (10, 8036134), (20, 4018067), (109, 737260), (191, 420740), (193, 416380), (218, 368630), (382, 210370), (386, 208190), (436, 184315), (545, 147452), (764, 105185), (772, 104095), (955, 84148), (965, 83276), (1090, 73726), (1910, 42074), (1930, 41638), (2180, 36863), (3820, 21037), (3860, 20819)]