21431760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12757}}^1$

素因数の和:12780

約数の個数: 80

約数和(自身を含む): 75935616

約数和(自身を除く): 54503856

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, 12757, 25514, 38271, 51028, 63785, 76542, 89299, 102056, 127570, 153084, 178598, 191355, 204112, 255140, 267897, 306168, 357196, 382710, 446495, 510280, 535794, 612336, 714392, 765420, 892990, 1020560, 1071588, 1339485, 1428784, 1530840, 1785980, 2143176, 2678970, 3061680, 3571960, 4286352, 5357940, 7143920, 10715880, 21431760]

約数ペア:

[(1, 21431760), (2, 10715880), (3, 7143920), (4, 5357940), (5, 4286352), (6, 3571960), (7, 3061680), (8, 2678970), (10, 2143176), (12, 1785980), (14, 1530840), (15, 1428784), (16, 1339485), (20, 1071588), (21, 1020560), (24, 892990), (28, 765420), (30, 714392), (35, 612336), (40, 535794), (42, 510280), (48, 446495), (56, 382710), (60, 357196), (70, 306168), (80, 267897), (84, 255140), (105, 204112), (112, 191355), (120, 178598), (140, 153084), (168, 127570), (210, 102056), (240, 89299), (280, 76542), (336, 63785), (420, 51028), (560, 38271), (840, 25514), (1680, 12757)]