661980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:99

約数の個数: 96

約数和(自身を含む): 2177280

約数和(自身を除く): 1515300

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 33, 34, 44, 51, 55, 59, 60, 66, 68, 85, 102, 110, 118, 132, 165, 170, 177, 187, 204, 220, 236, 255, 295, 330, 340, 354, 374, 510, 561, 590, 649, 660, 708, 748, 885, 935, 1003, 1020, 1122, 1180, 1298, 1770, 1870, 1947, 2006, 2244, 2596, 2805, 3009, 3245, 3540, 3740, 3894, 4012, 5015, 5610, 6018, 6490, 7788, 9735, 10030, 11033, 11220, 12036, 12980, 15045, 19470, 20060, 22066, 30090, 33099, 38940, 44132, 55165, 60180, 66198, 110330, 132396, 165495, 220660, 330990, 661980]

約数ペア:

[(1, 661980), (2, 330990), (3, 220660), (4, 165495), (5, 132396), (6, 110330), (10, 66198), (11, 60180), (12, 55165), (15, 44132), (17, 38940), (20, 33099), (22, 30090), (30, 22066), (33, 20060), (34, 19470), (44, 15045), (51, 12980), (55, 12036), (59, 11220), (60, 11033), (66, 10030), (68, 9735), (85, 7788), (102, 6490), (110, 6018), (118, 5610), (132, 5015), (165, 4012), (170, 3894), (177, 3740), (187, 3540), (204, 3245), (220, 3009), (236, 2805), (255, 2596), (295, 2244), (330, 2006), (340, 1947), (354, 1870), (374, 1770), (510, 1298), (561, 1180), (590, 1122), (649, 1020), (660, 1003), (708, 935), (748, 885)]