81712400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{379}}^1$

素因数の和:422

約数の個数: 180

約数和(自身を含む): 249783120

約数和(自身を除く): 168070720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 35, 40, 44, 49, 50, 55, 56, 70, 77, 80, 88, 98, 100, 110, 112, 140, 154, 175, 176, 196, 200, 220, 245, 275, 280, 308, 350, 379, 385, 392, 400, 440, 490, 539, 550, 560, 616, 700, 758, 770, 784, 880, 980, 1078, 1100, 1225, 1232, 1400, 1516, 1540, 1895, 1925, 1960, 2156, 2200, 2450, 2653, 2695, 2800, 3032, 3080, 3790, 3850, 3920, 4169, 4312, 4400, 4900, 5306, 5390, 6064, 6160, 7580, 7700, 8338, 8624, 9475, 9800, 10612, 10780, 13265, 13475, 15160, 15400, 16676, 18571, 18950, 19600, 20845, 21224, 21560, 26530, 26950, 29183, 30320, 30800, 33352, 37142, 37900, 41690, 42448, 43120, 53060, 53900, 58366, 66325, 66704, 74284, 75800, 83380, 92855, 104225, 106120, 107800, 116732, 132650, 145915, 148568, 151600, 166760, 185710, 204281, 208450, 212240, 215600, 233464, 265300, 291830, 297136, 333520, 371420, 408562, 416900, 464275, 466928, 530600, 583660, 729575, 742840, 817124, 833800, 928550, 1021405, 1061200, 1167320, 1459150, 1485680, 1634248, 1667600, 1857100, 2042810, 2334640, 2918300, 3268496, 3714200, 4085620, 5107025, 5836600, 7428400, 8171240, 10214050, 11673200, 16342480, 20428100, 40856200, 81712400]

約数ペア:

[(1, 81712400), (2, 40856200), (4, 20428100), (5, 16342480), (7, 11673200), (8, 10214050), (10, 8171240), (11, 7428400), (14, 5836600), (16, 5107025), (20, 4085620), (22, 3714200), (25, 3268496), (28, 2918300), (35, 2334640), (40, 2042810), (44, 1857100), (49, 1667600), (50, 1634248), (55, 1485680), (56, 1459150), (70, 1167320), (77, 1061200), (80, 1021405), (88, 928550), (98, 833800), (100, 817124), (110, 742840), (112, 729575), (140, 583660), (154, 530600), (175, 466928), (176, 464275), (196, 416900), (200, 408562), (220, 371420), (245, 333520), (275, 297136), (280, 291830), (308, 265300), (350, 233464), (379, 215600), (385, 212240), (392, 208450), (400, 204281), (440, 185710), (490, 166760), (539, 151600), (550, 148568), (560, 145915), (616, 132650), (700, 116732), (758, 107800), (770, 106120), (784, 104225), (880, 92855), (980, 83380), (1078, 75800), (1100, 74284), (1225, 66704), (1232, 66325), (1400, 58366), (1516, 53900), (1540, 53060), (1895, 43120), (1925, 42448), (1960, 41690), (2156, 37900), (2200, 37142), (2450, 33352), (2653, 30800), (2695, 30320), (2800, 29183), (3032, 26950), (3080, 26530), (3790, 21560), (3850, 21224), (3920, 20845), (4169, 19600), (4312, 18950), (4400, 18571), (4900, 16676), (5306, 15400), (5390, 15160), (6064, 13475), (6160, 13265), (7580, 10780), (7700, 10612), (8338, 9800), (8624, 9475)]