138532520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{494759}}^1$

素因数の和:494777

約数の個数: 32

約数和(自身を含む): 356227200

約数和(自身を除く): 217694680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 494759, 989518, 1979036, 2473795, 3463313, 3958072, 4947590, 6926626, 9895180, 13853252, 17316565, 19790360, 27706504, 34633130, 69266260, 138532520]

約数ペア:

[(1, 138532520), (2, 69266260), (4, 34633130), (5, 27706504), (7, 19790360), (8, 17316565), (10, 13853252), (14, 9895180), (20, 6926626), (28, 4947590), (35, 3958072), (40, 3463313), (56, 2473795), (70, 1979036), (140, 989518), (280, 494759)]