721235340

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{63601}}^1$

素因数の和:63629

約数の個数: 120

約数和(自身を含む): 2585802912

約数和(自身を除く): 1864567572

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2835, 3780, 5670, 11340, 63601, 127202, 190803, 254404, 318005, 381606, 445207, 572409, 636010, 763212, 890414, 954015, 1144818, 1272020, 1335621, 1717227, 1780828, 1908030, 2226035, 2289636, 2671242, 2862045, 3434454, 3816060, 4006863, 4452070, 5151681, 5342484, 5724090, 6678105, 6868908, 8013726, 8586135, 8904140, 10303362, 11448180, 12020589, 13356210, 16027452, 17172270, 20034315, 20606724, 24041178, 25758405, 26712420, 34344540, 36061767, 40068630, 48082356, 51516810, 60102945, 72123534, 80137260, 103033620, 120205890, 144247068, 180308835, 240411780, 360617670, 721235340]

約数ペア:

[(1, 721235340), (2, 360617670), (3, 240411780), (4, 180308835), (5, 144247068), (6, 120205890), (7, 103033620), (9, 80137260), (10, 72123534), (12, 60102945), (14, 51516810), (15, 48082356), (18, 40068630), (20, 36061767), (21, 34344540), (27, 26712420), (28, 25758405), (30, 24041178), (35, 20606724), (36, 20034315), (42, 17172270), (45, 16027452), (54, 13356210), (60, 12020589), (63, 11448180), (70, 10303362), (81, 8904140), (84, 8586135), (90, 8013726), (105, 6868908), (108, 6678105), (126, 5724090), (135, 5342484), (140, 5151681), (162, 4452070), (180, 4006863), (189, 3816060), (210, 3434454), (252, 2862045), (270, 2671242), (315, 2289636), (324, 2226035), (378, 1908030), (405, 1780828), (420, 1717227), (540, 1335621), (567, 1272020), (630, 1144818), (756, 954015), (810, 890414), (945, 763212), (1134, 636010), (1260, 572409), (1620, 445207), (1890, 381606), (2268, 318005), (2835, 254404), (3780, 190803), (5670, 127202), (11340, 63601)]