8365980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19919}}^1$

素因数の和:19938

約数の個数: 48

約数和(自身を含む): 26772480

約数和(自身を除く): 18406500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 19919, 39838, 59757, 79676, 99595, 119514, 139433, 199190, 239028, 278866, 298785, 398380, 418299, 557732, 597570, 697165, 836598, 1195140, 1394330, 1673196, 2091495, 2788660, 4182990, 8365980]

約数ペア:

[(1, 8365980), (2, 4182990), (3, 2788660), (4, 2091495), (5, 1673196), (6, 1394330), (7, 1195140), (10, 836598), (12, 697165), (14, 597570), (15, 557732), (20, 418299), (21, 398380), (28, 298785), (30, 278866), (35, 239028), (42, 199190), (60, 139433), (70, 119514), (84, 99595), (105, 79676), (140, 59757), (210, 39838), (420, 19919)]