20301740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^2\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 47410272

約数和(自身を除く): 27108532

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 71, 85, 116, 142, 145, 170, 284, 290, 340, 355, 493, 580, 710, 841, 986, 1207, 1420, 1682, 1972, 2059, 2414, 2465, 3364, 4118, 4205, 4828, 4930, 6035, 8236, 8410, 9860, 10295, 12070, 14297, 16820, 20590, 24140, 28594, 35003, 41180, 57188, 59711, 70006, 71485, 119422, 140012, 142970, 175015, 238844, 285940, 298555, 350030, 597110, 700060, 1015087, 1194220, 2030174, 4060348, 5075435, 10150870, 20301740]

約数ペア:

[(1, 20301740), (2, 10150870), (4, 5075435), (5, 4060348), (10, 2030174), (17, 1194220), (20, 1015087), (29, 700060), (34, 597110), (58, 350030), (68, 298555), (71, 285940), (85, 238844), (116, 175015), (142, 142970), (145, 140012), (170, 119422), (284, 71485), (290, 70006), (340, 59711), (355, 57188), (493, 41180), (580, 35003), (710, 28594), (841, 24140), (986, 20590), (1207, 16820), (1420, 14297), (1682, 12070), (1972, 10295), (2059, 9860), (2414, 8410), (2465, 8236), (3364, 6035), (4118, 4930), (4205, 4828)]