251667920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:186

約数の個数: 240

約数和(自身を含む): 746380800

約数和(自身を除く): 494712880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 31, 35, 38, 40, 49, 56, 62, 70, 76, 80, 95, 98, 109, 112, 124, 133, 140, 152, 155, 190, 196, 217, 218, 245, 248, 266, 280, 304, 310, 380, 392, 434, 436, 490, 496, 532, 545, 560, 589, 620, 665, 760, 763, 784, 868, 872, 931, 980, 1064, 1085, 1090, 1178, 1240, 1330, 1519, 1520, 1526, 1736, 1744, 1862, 1960, 2071, 2128, 2170, 2180, 2356, 2480, 2660, 2945, 3038, 3052, 3379, 3472, 3724, 3815, 3920, 4123, 4142, 4340, 4360, 4655, 4712, 5320, 5341, 5890, 6076, 6104, 6758, 7448, 7595, 7630, 8246, 8284, 8680, 8720, 9310, 9424, 10355, 10640, 10682, 11780, 12152, 12208, 13516, 14497, 14896, 15190, 15260, 16492, 16568, 16895, 17360, 18620, 20615, 20710, 21364, 23560, 23653, 24304, 26705, 27032, 28861, 28994, 30380, 30520, 32984, 33136, 33790, 37240, 41230, 41420, 42728, 47120, 47306, 53410, 54064, 57722, 57988, 60760, 61040, 64201, 65968, 67580, 72485, 74480, 82460, 82840, 85456, 94612, 101479, 106820, 115444, 115976, 118265, 121520, 128402, 135160, 144305, 144970, 164920, 165571, 165680, 189224, 202958, 213640, 230888, 231952, 236530, 256804, 270320, 288610, 289940, 321005, 329840, 331142, 378448, 405916, 427280, 449407, 461776, 473060, 507395, 513608, 577220, 579880, 642010, 662284, 811832, 827855, 898814, 946120, 1014790, 1027216, 1154440, 1159760, 1284020, 1324568, 1623664, 1655710, 1797628, 1892240, 2029580, 2247035, 2308880, 2568040, 2649136, 3145849, 3311420, 3595256, 4059160, 4494070, 5136080, 6291698, 6622840, 7190512, 8118320, 8988140, 12583396, 13245680, 15729245, 17976280, 25166792, 31458490, 35952560, 50333584, 62916980, 125833960, 251667920]

約数ペア:

[(1, 251667920), (2, 125833960), (4, 62916980), (5, 50333584), (7, 35952560), (8, 31458490), (10, 25166792), (14, 17976280), (16, 15729245), (19, 13245680), (20, 12583396), (28, 8988140), (31, 8118320), (35, 7190512), (38, 6622840), (40, 6291698), (49, 5136080), (56, 4494070), (62, 4059160), (70, 3595256), (76, 3311420), (80, 3145849), (95, 2649136), (98, 2568040), (109, 2308880), (112, 2247035), (124, 2029580), (133, 1892240), (140, 1797628), (152, 1655710), (155, 1623664), (190, 1324568), (196, 1284020), (217, 1159760), (218, 1154440), (245, 1027216), (248, 1014790), (266, 946120), (280, 898814), (304, 827855), (310, 811832), (380, 662284), (392, 642010), (434, 579880), (436, 577220), (490, 513608), (496, 507395), (532, 473060), (545, 461776), (560, 449407), (589, 427280), (620, 405916), (665, 378448), (760, 331142), (763, 329840), (784, 321005), (868, 289940), (872, 288610), (931, 270320), (980, 256804), (1064, 236530), (1085, 231952), (1090, 230888), (1178, 213640), (1240, 202958), (1330, 189224), (1519, 165680), (1520, 165571), (1526, 164920), (1736, 144970), (1744, 144305), (1862, 135160), (1960, 128402), (2071, 121520), (2128, 118265), (2170, 115976), (2180, 115444), (2356, 106820), (2480, 101479), (2660, 94612), (2945, 85456), (3038, 82840), (3052, 82460), (3379, 74480), (3472, 72485), (3724, 67580), (3815, 65968), (3920, 64201), (4123, 61040), (4142, 60760), (4340, 57988), (4360, 57722), (4655, 54064), (4712, 53410), (5320, 47306), (5341, 47120), (5890, 42728), (6076, 41420), (6104, 41230), (6758, 37240), (7448, 33790), (7595, 33136), (7630, 32984), (8246, 30520), (8284, 30380), (8680, 28994), (8720, 28861), (9310, 27032), (9424, 26705), (10355, 24304), (10640, 23653), (10682, 23560), (11780, 21364), (12152, 20710), (12208, 20615), (13516, 18620), (14497, 17360), (14896, 16895), (15190, 16568), (15260, 16492)]