40170280

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1973}}^1$

素因数の和:2493

約数の個数: 32

約数和(自身を含む): 90606600

約数和(自身を除く): 50436320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 1973, 2036, 2545, 3946, 4072, 5090, 7892, 9865, 10180, 15784, 19730, 20360, 39460, 78920, 1004257, 2008514, 4017028, 5021285, 8034056, 10042570, 20085140, 40170280]

約数ペア:

[(1, 40170280), (2, 20085140), (4, 10042570), (5, 8034056), (8, 5021285), (10, 4017028), (20, 2008514), (40, 1004257), (509, 78920), (1018, 39460), (1973, 20360), (2036, 19730), (2545, 15784), (3946, 10180), (4072, 9865), (5090, 7892)]