40542868

素因数分解:

$2^2\times {\mathrm{509}}^1\times {\mathrm{19913}}^1$

素因数の和:20426

約数の個数: 12

約数和(自身を含む): 71092980

約数和(自身を除く): 30550112

約数列:

[1, 2, 4, 509, 1018, 2036, 19913, 39826, 79652, 10135717, 20271434, 40542868]

約数ペア:

[(1, 40542868), (2, 20271434), (4, 10135717), (509, 79652), (1018, 39826), (2036, 19913)]