217491960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{258919}}^1$

素因数の和:258940

約数の個数: 64

約数和(自身を含む): 745689600

約数和(自身を除く): 528197640

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, 258919, 517838, 776757, 1035676, 1294595, 1553514, 1812433, 2071352, 2589190, 3107028, 3624866, 3883785, 5178380, 5437299, 6214056, 7249732, 7767570, 9062165, 10356760, 10874598, 14499464, 15535140, 18124330, 21749196, 27186495, 31070280, 36248660, 43498392, 54372990, 72497320, 108745980, 217491960]

約数ペア:

[(1, 217491960), (2, 108745980), (3, 72497320), (4, 54372990), (5, 43498392), (6, 36248660), (7, 31070280), (8, 27186495), (10, 21749196), (12, 18124330), (14, 15535140), (15, 14499464), (20, 10874598), (21, 10356760), (24, 9062165), (28, 7767570), (30, 7249732), (35, 6214056), (40, 5437299), (42, 5178380), (56, 3883785), (60, 3624866), (70, 3107028), (84, 2589190), (105, 2071352), (120, 1812433), (140, 1553514), (168, 1294595), (210, 1035676), (280, 776757), (420, 517838), (840, 258919)]