209421240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{249311}}^1$

素因数の和:249332

約数の個数: 64

約数和(自身を含む): 718018560

約数和(自身を除く): 508597320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 249311, 498622, 747933, 997244, 1246555, 1495866, 1745177, 1994488, 2493110, 2991732, 3490354, 3739665, 4986220, 5235531, 5983464, 6980708, 7479330, 8725885, 9972440, 10471062, 13961416, 14958660, 17451770, 20942124, 26177655, 29917320, 34903540, 41884248, 52355310, 69807080, 104710620, 209421240]

約数ペア:

[(1, 209421240), (2, 104710620), (3, 69807080), (4, 52355310), (5, 41884248), (6, 34903540), (7, 29917320), (8, 26177655), (10, 20942124), (12, 17451770), (14, 14958660), (15, 13961416), (20, 10471062), (21, 9972440), (24, 8725885), (28, 7479330), (30, 6980708), (35, 5983464), (40, 5235531), (42, 4986220), (56, 3739665), (60, 3490354), (70, 2991732), (84, 2493110), (105, 1994488), (120, 1745177), (140, 1495866), (168, 1246555), (210, 997244), (280, 747933), (420, 498622), (840, 249311)]