138666080

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{769}}^1$

素因数の和:821

約数の個数: 144

約数和(自身を含む): 398170080

約数和(自身を除く): 259504000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 70, 80, 92, 98, 112, 115, 140, 160, 161, 184, 196, 224, 230, 245, 280, 322, 368, 392, 460, 490, 560, 644, 736, 769, 784, 805, 920, 980, 1120, 1127, 1288, 1538, 1568, 1610, 1840, 1960, 2254, 2576, 3076, 3220, 3680, 3845, 3920, 4508, 5152, 5383, 5635, 6152, 6440, 7690, 7840, 9016, 10766, 11270, 12304, 12880, 15380, 17687, 18032, 21532, 22540, 24608, 25760, 26915, 30760, 35374, 36064, 37681, 43064, 45080, 53830, 61520, 70748, 75362, 86128, 88435, 90160, 107660, 123040, 123809, 141496, 150724, 172256, 176870, 180320, 188405, 215320, 247618, 282992, 301448, 353740, 376810, 430640, 495236, 565984, 602896, 619045, 707480, 753620, 861280, 866663, 990472, 1205792, 1238090, 1414960, 1507240, 1733326, 1980944, 2476180, 2829920, 3014480, 3466652, 3961888, 4333315, 4952360, 6028960, 6933304, 8666630, 9904720, 13866608, 17333260, 19809440, 27733216, 34666520, 69333040, 138666080]

約数ペア:

[(1, 138666080), (2, 69333040), (4, 34666520), (5, 27733216), (7, 19809440), (8, 17333260), (10, 13866608), (14, 9904720), (16, 8666630), (20, 6933304), (23, 6028960), (28, 4952360), (32, 4333315), (35, 3961888), (40, 3466652), (46, 3014480), (49, 2829920), (56, 2476180), (70, 1980944), (80, 1733326), (92, 1507240), (98, 1414960), (112, 1238090), (115, 1205792), (140, 990472), (160, 866663), (161, 861280), (184, 753620), (196, 707480), (224, 619045), (230, 602896), (245, 565984), (280, 495236), (322, 430640), (368, 376810), (392, 353740), (460, 301448), (490, 282992), (560, 247618), (644, 215320), (736, 188405), (769, 180320), (784, 176870), (805, 172256), (920, 150724), (980, 141496), (1120, 123809), (1127, 123040), (1288, 107660), (1538, 90160), (1568, 88435), (1610, 86128), (1840, 75362), (1960, 70748), (2254, 61520), (2576, 53830), (3076, 45080), (3220, 43064), (3680, 37681), (3845, 36064), (3920, 35374), (4508, 30760), (5152, 26915), (5383, 25760), (5635, 24608), (6152, 22540), (6440, 21532), (7690, 18032), (7840, 17687), (9016, 15380), (10766, 12880), (11270, 12304)]