1320718720

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{16249}}^1$

素因数の和:16395

約数の個数: 64

約数和(自身を含む): 3182400000

約数和(自身を除く): 1861681280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 508, 635, 640, 1016, 1270, 2032, 2540, 4064, 5080, 8128, 10160, 16249, 16256, 20320, 32498, 40640, 64996, 81245, 81280, 129992, 162490, 259984, 324980, 519968, 649960, 1039936, 1299920, 2063623, 2079872, 2599840, 4127246, 5199680, 8254492, 10318115, 10399360, 16508984, 20636230, 33017968, 41272460, 66035936, 82544920, 132071872, 165089840, 264143744, 330179680, 660359360, 1320718720]

約数ペア:

[(1, 1320718720), (2, 660359360), (4, 330179680), (5, 264143744), (8, 165089840), (10, 132071872), (16, 82544920), (20, 66035936), (32, 41272460), (40, 33017968), (64, 20636230), (80, 16508984), (127, 10399360), (128, 10318115), (160, 8254492), (254, 5199680), (320, 4127246), (508, 2599840), (635, 2079872), (640, 2063623), (1016, 1299920), (1270, 1039936), (2032, 649960), (2540, 519968), (4064, 324980), (5080, 259984), (8128, 162490), (10160, 129992), (16249, 81280), (16256, 81245), (20320, 64996), (32498, 40640)]