21004211760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12502507}}^1$

素因数の和:12502530

約数の個数: 80

約数和(自身を含む): 74414927616

約数和(自身を除く): 53410715856

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12502507, 25005014, 37507521, 50010028, 62512535, 75015042, 87517549, 100020056, 125025070, 150030084, 175035098, 187537605, 200040112, 250050140, 262552647, 300060168, 350070196, 375075210, 437587745, 500100280, 525105294, 600120336, 700140392, 750150420, 875175490, 1000200560, 1050210588, 1312763235, 1400280784, 1500300840, 1750350980, 2100421176, 2625526470, 3000601680, 3500701960, 4200842352, 5251052940, 7001403920, 10502105880, 21004211760]

約数ペア:

[(1, 21004211760), (2, 10502105880), (3, 7001403920), (4, 5251052940), (5, 4200842352), (6, 3500701960), (7, 3000601680), (8, 2625526470), (10, 2100421176), (12, 1750350980), (14, 1500300840), (15, 1400280784), (16, 1312763235), (20, 1050210588), (21, 1000200560), (24, 875175490), (28, 750150420), (30, 700140392), (35, 600120336), (40, 525105294), (42, 500100280), (48, 437587745), (56, 375075210), (60, 350070196), (70, 300060168), (80, 262552647), (84, 250050140), (105, 200040112), (112, 187537605), (120, 175035098), (140, 150030084), (168, 125025070), (210, 100020056), (240, 87517549), (280, 75015042), (336, 62512535), (420, 50010028), (560, 37507521), (840, 25005014), (1680, 12502507)]