290185980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{690919}}^1$

素因数の和:690938

約数の個数: 48

約数和(自身を含む): 928596480

約数和(自身を除く): 638410500

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, 690919, 1381838, 2072757, 2763676, 3454595, 4145514, 4836433, 6909190, 8291028, 9672866, 10363785, 13818380, 14509299, 19345732, 20727570, 24182165, 29018598, 41455140, 48364330, 58037196, 72546495, 96728660, 145092990, 290185980]

約数ペア:

[(1, 290185980), (2, 145092990), (3, 96728660), (4, 72546495), (5, 58037196), (6, 48364330), (7, 41455140), (10, 29018598), (12, 24182165), (14, 20727570), (15, 19345732), (20, 14509299), (21, 13818380), (28, 10363785), (30, 9672866), (35, 8291028), (42, 6909190), (60, 4836433), (70, 4145514), (84, 3454595), (105, 2763676), (140, 2072757), (210, 1381838), (420, 690919)]