80548480

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{991}}^1$

素因数の和:1137

約数の個数: 64

約数和(自身を含む): 194273280

約数和(自身を除く): 113724800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 508, 635, 640, 991, 1016, 1270, 1982, 2032, 2540, 3964, 4064, 4955, 5080, 7928, 8128, 9910, 10160, 15856, 16256, 19820, 20320, 31712, 39640, 40640, 63424, 79280, 81280, 125857, 126848, 158560, 251714, 317120, 503428, 629285, 634240, 1006856, 1258570, 2013712, 2517140, 4027424, 5034280, 8054848, 10068560, 16109696, 20137120, 40274240, 80548480]

約数ペア:

[(1, 80548480), (2, 40274240), (4, 20137120), (5, 16109696), (8, 10068560), (10, 8054848), (16, 5034280), (20, 4027424), (32, 2517140), (40, 2013712), (64, 1258570), (80, 1006856), (127, 634240), (128, 629285), (160, 503428), (254, 317120), (320, 251714), (508, 158560), (635, 126848), (640, 125857), (991, 81280), (1016, 79280), (1270, 63424), (1982, 40640), (2032, 39640), (2540, 31712), (3964, 20320), (4064, 19820), (4955, 16256), (5080, 15856), (7928, 10160), (8128, 9910)]