85820840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{306503}}^1$

素因数の和:306521

約数の個数: 32

約数和(自身を含む): 220682880

約数和(自身を除く): 134862040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 306503, 613006, 1226012, 1532515, 2145521, 2452024, 3065030, 4291042, 6130060, 8582084, 10727605, 12260120, 17164168, 21455210, 42910420, 85820840]

約数ペア:

[(1, 85820840), (2, 42910420), (4, 21455210), (5, 17164168), (7, 12260120), (8, 10727605), (10, 8582084), (14, 6130060), (20, 4291042), (28, 3065030), (35, 2452024), (40, 2145521), (56, 1532515), (70, 1226012), (140, 613006), (280, 306503)]