128444680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^2$

素因数の和:180

約数の個数: 144

約数和(自身を含む): 367215660

約数和(自身を除く): 238770980

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 71, 91, 98, 104, 130, 140, 142, 182, 196, 245, 260, 280, 284, 355, 364, 392, 455, 490, 497, 520, 568, 637, 710, 728, 910, 923, 980, 994, 1274, 1420, 1820, 1846, 1960, 1988, 2485, 2548, 2840, 3185, 3479, 3640, 3692, 3976, 4615, 4970, 5041, 5096, 6370, 6461, 6958, 7384, 9230, 9940, 10082, 12740, 12922, 13916, 17395, 18460, 19880, 20164, 25205, 25480, 25844, 27832, 32305, 34790, 35287, 36920, 40328, 45227, 50410, 51688, 64610, 65533, 69580, 70574, 90454, 100820, 129220, 131066, 139160, 141148, 176435, 180908, 201640, 226135, 247009, 258440, 262132, 282296, 327665, 352870, 361816, 452270, 458731, 494018, 524264, 655330, 705740, 904540, 917462, 988036, 1235045, 1310660, 1411480, 1809080, 1834924, 1976072, 2293655, 2470090, 2621320, 3211117, 3669848, 4587310, 4940180, 6422234, 9174620, 9880360, 12844468, 16055585, 18349240, 25688936, 32111170, 64222340, 128444680]

約数ペア:

[(1, 128444680), (2, 64222340), (4, 32111170), (5, 25688936), (7, 18349240), (8, 16055585), (10, 12844468), (13, 9880360), (14, 9174620), (20, 6422234), (26, 4940180), (28, 4587310), (35, 3669848), (40, 3211117), (49, 2621320), (52, 2470090), (56, 2293655), (65, 1976072), (70, 1834924), (71, 1809080), (91, 1411480), (98, 1310660), (104, 1235045), (130, 988036), (140, 917462), (142, 904540), (182, 705740), (196, 655330), (245, 524264), (260, 494018), (280, 458731), (284, 452270), (355, 361816), (364, 352870), (392, 327665), (455, 282296), (490, 262132), (497, 258440), (520, 247009), (568, 226135), (637, 201640), (710, 180908), (728, 176435), (910, 141148), (923, 139160), (980, 131066), (994, 129220), (1274, 100820), (1420, 90454), (1820, 70574), (1846, 69580), (1960, 65533), (1988, 64610), (2485, 51688), (2548, 50410), (2840, 45227), (3185, 40328), (3479, 36920), (3640, 35287), (3692, 34790), (3976, 32305), (4615, 27832), (4970, 25844), (5041, 25480), (5096, 25205), (6370, 20164), (6461, 19880), (6958, 18460), (7384, 17395), (9230, 13916), (9940, 12922), (10082, 12740)]