1287999020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{139}}^1\times {\mathrm{547}}^1$

素因数の和:724

約数の個数: 144

約数和(自身を含む): 3428463360

約数和(自身を除く): 2140464340

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 139, 140, 154, 220, 242, 278, 308, 385, 484, 547, 556, 605, 695, 770, 847, 973, 1094, 1210, 1390, 1529, 1540, 1694, 1946, 2188, 2420, 2735, 2780, 3058, 3388, 3829, 3892, 4235, 4865, 5470, 6017, 6116, 7645, 7658, 8470, 9730, 10703, 10940, 12034, 15290, 15316, 16819, 16940, 19145, 19460, 21406, 24068, 30085, 30580, 33638, 38290, 42119, 42812, 53515, 60170, 66187, 67276, 76033, 76580, 84095, 84238, 107030, 117733, 120340, 132374, 152066, 168190, 168476, 210595, 214060, 235466, 264748, 304132, 330935, 336380, 380165, 421190, 463309, 470932, 532231, 588665, 661870, 760330, 836363, 842380, 926618, 1064462, 1177330, 1323740, 1520660, 1672726, 1853236, 2128924, 2316545, 2354660, 2661155, 3345452, 4181815, 4633090, 5322310, 5854541, 8363630, 9199993, 9266180, 10644620, 11709082, 16727260, 18399986, 23418164, 29272705, 36799972, 45999965, 58545410, 64399951, 91999930, 117090820, 128799902, 183999860, 257599804, 321999755, 643999510, 1287999020]

約数ペア:

[(1, 1287999020), (2, 643999510), (4, 321999755), (5, 257599804), (7, 183999860), (10, 128799902), (11, 117090820), (14, 91999930), (20, 64399951), (22, 58545410), (28, 45999965), (35, 36799972), (44, 29272705), (55, 23418164), (70, 18399986), (77, 16727260), (110, 11709082), (121, 10644620), (139, 9266180), (140, 9199993), (154, 8363630), (220, 5854541), (242, 5322310), (278, 4633090), (308, 4181815), (385, 3345452), (484, 2661155), (547, 2354660), (556, 2316545), (605, 2128924), (695, 1853236), (770, 1672726), (847, 1520660), (973, 1323740), (1094, 1177330), (1210, 1064462), (1390, 926618), (1529, 842380), (1540, 836363), (1694, 760330), (1946, 661870), (2188, 588665), (2420, 532231), (2735, 470932), (2780, 463309), (3058, 421190), (3388, 380165), (3829, 336380), (3892, 330935), (4235, 304132), (4865, 264748), (5470, 235466), (6017, 214060), (6116, 210595), (7645, 168476), (7658, 168190), (8470, 152066), (9730, 132374), (10703, 120340), (10940, 117733), (12034, 107030), (15290, 84238), (15316, 84095), (16819, 76580), (16940, 76033), (19145, 67276), (19460, 66187), (21406, 60170), (24068, 53515), (30085, 42812), (30580, 42119), (33638, 38290)]