21018480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12511}}^1$

素因数の和:12534

約数の個数: 80

約数和(自身を含む): 74471424

約数和(自身を除く): 53452944

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, 12511, 25022, 37533, 50044, 62555, 75066, 87577, 100088, 125110, 150132, 175154, 187665, 200176, 250220, 262731, 300264, 350308, 375330, 437885, 500440, 525462, 600528, 700616, 750660, 875770, 1000880, 1050924, 1313655, 1401232, 1501320, 1751540, 2101848, 2627310, 3002640, 3503080, 4203696, 5254620, 7006160, 10509240, 21018480]

約数ペア:

[(1, 21018480), (2, 10509240), (3, 7006160), (4, 5254620), (5, 4203696), (6, 3503080), (7, 3002640), (8, 2627310), (10, 2101848), (12, 1751540), (14, 1501320), (15, 1401232), (16, 1313655), (20, 1050924), (21, 1000880), (24, 875770), (28, 750660), (30, 700616), (35, 600528), (40, 525462), (42, 500440), (48, 437885), (56, 375330), (60, 350308), (70, 300264), (80, 262731), (84, 250220), (105, 200176), (112, 187665), (120, 175154), (140, 150132), (168, 125110), (210, 100088), (240, 87577), (280, 75066), (336, 62555), (420, 50044), (560, 37533), (840, 25022), (1680, 12511)]