256428180

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2777}}^1$

素因数の和:2820

約数の個数: 144

約数和(自身を含む): 849401280

約数和(自身を除く): 592973100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 243, 270, 285, 324, 342, 380, 405, 486, 513, 540, 570, 684, 810, 855, 972, 1026, 1140, 1215, 1539, 1620, 1710, 2052, 2430, 2565, 2777, 3078, 3420, 4617, 4860, 5130, 5554, 6156, 7695, 8331, 9234, 10260, 11108, 13885, 15390, 16662, 18468, 23085, 24993, 27770, 30780, 33324, 41655, 46170, 49986, 52763, 55540, 74979, 83310, 92340, 99972, 105526, 124965, 149958, 158289, 166620, 211052, 224937, 249930, 263815, 299916, 316578, 374895, 449874, 474867, 499860, 527630, 633156, 674811, 749790, 791445, 899748, 949734, 1055260, 1124685, 1349622, 1424601, 1499580, 1582890, 1899468, 2249370, 2374335, 2699244, 2849202, 3165780, 3374055, 4273803, 4498740, 4748670, 5698404, 6748110, 7123005, 8547606, 9497340, 12821409, 13496220, 14246010, 17095212, 21369015, 25642818, 28492020, 42738030, 51285636, 64107045, 85476060, 128214090, 256428180]

約数ペア:

[(1, 256428180), (2, 128214090), (3, 85476060), (4, 64107045), (5, 51285636), (6, 42738030), (9, 28492020), (10, 25642818), (12, 21369015), (15, 17095212), (18, 14246010), (19, 13496220), (20, 12821409), (27, 9497340), (30, 8547606), (36, 7123005), (38, 6748110), (45, 5698404), (54, 4748670), (57, 4498740), (60, 4273803), (76, 3374055), (81, 3165780), (90, 2849202), (95, 2699244), (108, 2374335), (114, 2249370), (135, 1899468), (162, 1582890), (171, 1499580), (180, 1424601), (190, 1349622), (228, 1124685), (243, 1055260), (270, 949734), (285, 899748), (324, 791445), (342, 749790), (380, 674811), (405, 633156), (486, 527630), (513, 499860), (540, 474867), (570, 449874), (684, 374895), (810, 316578), (855, 299916), (972, 263815), (1026, 249930), (1140, 224937), (1215, 211052), (1539, 166620), (1620, 158289), (1710, 149958), (2052, 124965), (2430, 105526), (2565, 99972), (2777, 92340), (3078, 83310), (3420, 74979), (4617, 55540), (4860, 52763), (5130, 49986), (5554, 46170), (6156, 41655), (7695, 33324), (8331, 30780), (9234, 27770), (10260, 24993), (11108, 23085), (13885, 18468), (15390, 16662)]