20137120

素因数分解:

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

素因数の和:1133

約数の個数: 48

約数和(自身を含む): 47996928

約数和(自身を除く): 27859808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 991, 1016, 1270, 1982, 2032, 2540, 3964, 4064, 4955, 5080, 7928, 9910, 10160, 15856, 19820, 20320, 31712, 39640, 79280, 125857, 158560, 251714, 503428, 629285, 1006856, 1258570, 2013712, 2517140, 4027424, 5034280, 10068560, 20137120]

約数ペア:

[(1, 20137120), (2, 10068560), (4, 5034280), (5, 4027424), (8, 2517140), (10, 2013712), (16, 1258570), (20, 1006856), (32, 629285), (40, 503428), (80, 251714), (127, 158560), (160, 125857), (254, 79280), (508, 39640), (635, 31712), (991, 20320), (1016, 19820), (1270, 15856), (1982, 10160), (2032, 9910), (2540, 7928), (3964, 5080), (4064, 4955)]