9720280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5927}}^1$

素因数の和:5979

約数の個数: 32

約数和(自身を含む): 22407840

約数和(自身を除く): 12687560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 5927, 11854, 23708, 29635, 47416, 59270, 118540, 237080, 243007, 486014, 972028, 1215035, 1944056, 2430070, 4860140, 9720280]

約数ペア:

[(1, 9720280), (2, 4860140), (4, 2430070), (5, 1944056), (8, 1215035), (10, 972028), (20, 486014), (40, 243007), (41, 237080), (82, 118540), (164, 59270), (205, 47416), (328, 29635), (410, 23708), (820, 11854), (1640, 5927)]