1213213090

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1\times {\mathrm{1999}}^1$

素因数の和:2586

約数の個数: 32

約数和(自身を含む): 2205792000

約数和(自身を除く): 992578910

約数列:

[1, 2, 5, 10, 137, 274, 443, 685, 886, 1370, 1999, 2215, 3998, 4430, 9995, 19990, 60691, 121382, 273863, 303455, 547726, 606910, 885557, 1369315, 1771114, 2738630, 4427785, 8855570, 121321309, 242642618, 606606545, 1213213090]

約数ペア:

[(1, 1213213090), (2, 606606545), (5, 242642618), (10, 121321309), (137, 8855570), (274, 4427785), (443, 2738630), (685, 1771114), (886, 1369315), (1370, 885557), (1999, 606910), (2215, 547726), (3998, 303455), (4430, 273863), (9995, 121382), (19990, 60691)]