28700840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{102503}}^1$

素因数の和:102521

約数の個数: 32

約数和(自身を含む): 73802880

約数和(自身を除く): 45102040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 102503, 205006, 410012, 512515, 717521, 820024, 1025030, 1435042, 2050060, 2870084, 3587605, 4100120, 5740168, 7175210, 14350420, 28700840]

約数ペア:

[(1, 28700840), (2, 14350420), (4, 7175210), (5, 5740168), (7, 4100120), (8, 3587605), (10, 2870084), (14, 2050060), (20, 1435042), (28, 1025030), (35, 820024), (40, 717521), (56, 512515), (70, 410012), (140, 205006), (280, 102503)]