7980980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{523}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 19367040

約数和(自身を除く): 11386060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 523, 545, 763, 1046, 1090, 1526, 2092, 2180, 2615, 3052, 3661, 3815, 5230, 7322, 7630, 10460, 14644, 15260, 18305, 36610, 57007, 73220, 114014, 228028, 285035, 399049, 570070, 798098, 1140140, 1596196, 1995245, 3990490, 7980980]

約数ペア:

[(1, 7980980), (2, 3990490), (4, 1995245), (5, 1596196), (7, 1140140), (10, 798098), (14, 570070), (20, 399049), (28, 285035), (35, 228028), (70, 114014), (109, 73220), (140, 57007), (218, 36610), (436, 18305), (523, 15260), (545, 14644), (763, 10460), (1046, 7630), (1090, 7322), (1526, 5230), (2092, 3815), (2180, 3661), (2615, 3052)]