218365980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{519919}}^1$

素因数の和:519938

約数の個数: 48

約数和(自身を含む): 698772480

約数和(自身を除く): 480406500

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, 519919, 1039838, 1559757, 2079676, 2599595, 3119514, 3639433, 5199190, 6239028, 7278866, 7798785, 10398380, 10918299, 14557732, 15597570, 18197165, 21836598, 31195140, 36394330, 43673196, 54591495, 72788660, 109182990, 218365980]

約数ペア:

[(1, 218365980), (2, 109182990), (3, 72788660), (4, 54591495), (5, 43673196), (6, 36394330), (7, 31195140), (10, 21836598), (12, 18197165), (14, 15597570), (15, 14557732), (20, 10918299), (21, 10398380), (28, 7798785), (30, 7278866), (35, 6239028), (42, 5199190), (60, 3639433), (70, 3119514), (84, 2599595), (105, 2079676), (140, 1559757), (210, 1039838), (420, 519919)]