42257980

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^2\times {\mathrm{131}}^1$

素因数の和:394

約数の個数: 36

約数和(自身を含む): 90128808

約数和(自身を除く): 47870828

約数列:

[1, 2, 4, 5, 10, 20, 127, 131, 254, 262, 508, 524, 635, 655, 1270, 1310, 2540, 2620, 16129, 16637, 32258, 33274, 64516, 66548, 80645, 83185, 161290, 166370, 322580, 332740, 2112899, 4225798, 8451596, 10564495, 21128990, 42257980]

約数ペア:

[(1, 42257980), (2, 21128990), (4, 10564495), (5, 8451596), (10, 4225798), (20, 2112899), (127, 332740), (131, 322580), (254, 166370), (262, 161290), (508, 83185), (524, 80645), (635, 66548), (655, 64516), (1270, 33274), (1310, 32258), (2540, 16637), (2620, 16129)]