319999360

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^2$

素因数の和:304

約数の個数: 96

約数和(自身を含む): 795942720

約数和(自身を除く): 475943360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 127, 128, 155, 160, 248, 254, 310, 320, 496, 508, 620, 635, 640, 992, 1016, 1240, 1270, 1984, 2032, 2480, 2540, 3937, 3968, 4064, 4960, 5080, 7874, 8128, 9920, 10160, 15748, 16129, 16256, 19685, 19840, 20320, 31496, 32258, 39370, 40640, 62992, 64516, 78740, 80645, 81280, 125984, 129032, 157480, 161290, 251968, 258064, 314960, 322580, 499999, 503936, 516128, 629920, 645160, 999998, 1032256, 1259840, 1290320, 1999996, 2064512, 2499995, 2519680, 2580640, 3999992, 4999990, 5161280, 7999984, 9999980, 10322560, 15999968, 19999960, 31999936, 39999920, 63999872, 79999840, 159999680, 319999360]

約数ペア:

[(1, 319999360), (2, 159999680), (4, 79999840), (5, 63999872), (8, 39999920), (10, 31999936), (16, 19999960), (20, 15999968), (31, 10322560), (32, 9999980), (40, 7999984), (62, 5161280), (64, 4999990), (80, 3999992), (124, 2580640), (127, 2519680), (128, 2499995), (155, 2064512), (160, 1999996), (248, 1290320), (254, 1259840), (310, 1032256), (320, 999998), (496, 645160), (508, 629920), (620, 516128), (635, 503936), (640, 499999), (992, 322580), (1016, 314960), (1240, 258064), (1270, 251968), (1984, 161290), (2032, 157480), (2480, 129032), (2540, 125984), (3937, 81280), (3968, 80645), (4064, 78740), (4960, 64516), (5080, 62992), (7874, 40640), (8128, 39370), (9920, 32258), (10160, 31496), (15748, 20320), (16129, 19840), (16256, 19685)]