320425980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{762919}}^1$

素因数の和:762938

約数の個数: 48

約数和(自身を含む): 1025364480

約数和(自身を除く): 704938500

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, 762919, 1525838, 2288757, 3051676, 3814595, 4577514, 5340433, 7629190, 9155028, 10680866, 11443785, 15258380, 16021299, 21361732, 22887570, 26702165, 32042598, 45775140, 53404330, 64085196, 80106495, 106808660, 160212990, 320425980]

約数ペア:

[(1, 320425980), (2, 160212990), (3, 106808660), (4, 80106495), (5, 64085196), (6, 53404330), (7, 45775140), (10, 32042598), (12, 26702165), (14, 22887570), (15, 21361732), (20, 16021299), (21, 15258380), (28, 11443785), (30, 10680866), (35, 9155028), (42, 7629190), (60, 5340433), (70, 4577514), (84, 3814595), (105, 3051676), (140, 2288757), (210, 1525838), (420, 762919)]