28028840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{100103}}^1$

素因数の和:100121

約数の個数: 32

約数和(自身を含む): 72074880

約数和(自身を除く): 44046040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 100103, 200206, 400412, 500515, 700721, 800824, 1001030, 1401442, 2002060, 2802884, 3503605, 4004120, 5605768, 7007210, 14014420, 28028840]

約数ペア:

[(1, 28028840), (2, 14014420), (4, 7007210), (5, 5605768), (7, 4004120), (8, 3503605), (10, 2802884), (14, 2002060), (20, 1401442), (28, 1001030), (35, 800824), (40, 700721), (56, 500515), (70, 400412), (140, 200206), (280, 100103)]