19705980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{46919}}^1$

素因数の和:46938

約数の個数: 48

約数和(自身を含む): 63060480

約数和(自身を除く): 43354500

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, 46919, 93838, 140757, 187676, 234595, 281514, 328433, 469190, 563028, 656866, 703785, 938380, 985299, 1313732, 1407570, 1642165, 1970598, 2815140, 3284330, 3941196, 4926495, 6568660, 9852990, 19705980]

約数ペア:

[(1, 19705980), (2, 9852990), (3, 6568660), (4, 4926495), (5, 3941196), (6, 3284330), (7, 2815140), (10, 1970598), (12, 1642165), (14, 1407570), (15, 1313732), (20, 985299), (21, 938380), (28, 703785), (30, 656866), (35, 563028), (42, 469190), (60, 328433), (70, 281514), (84, 234595), (105, 187676), (140, 140757), (210, 93838), (420, 46919)]