19798880

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:312

約数の個数: 96

約数和(自身を含む): 51438240

約数和(自身を除く): 31639360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 68, 80, 85, 116, 136, 145, 160, 170, 232, 251, 272, 290, 340, 464, 493, 502, 544, 580, 680, 928, 986, 1004, 1160, 1255, 1360, 1972, 2008, 2320, 2465, 2510, 2720, 3944, 4016, 4267, 4640, 4930, 5020, 7279, 7888, 8032, 8534, 9860, 10040, 14558, 15776, 17068, 19720, 20080, 21335, 29116, 34136, 36395, 39440, 40160, 42670, 58232, 68272, 72790, 78880, 85340, 116464, 123743, 136544, 145580, 170680, 232928, 247486, 291160, 341360, 494972, 582320, 618715, 682720, 989944, 1164640, 1237430, 1979888, 2474860, 3959776, 4949720, 9899440, 19798880]

約数ペア:

[(1, 19798880), (2, 9899440), (4, 4949720), (5, 3959776), (8, 2474860), (10, 1979888), (16, 1237430), (17, 1164640), (20, 989944), (29, 682720), (32, 618715), (34, 582320), (40, 494972), (58, 341360), (68, 291160), (80, 247486), (85, 232928), (116, 170680), (136, 145580), (145, 136544), (160, 123743), (170, 116464), (232, 85340), (251, 78880), (272, 72790), (290, 68272), (340, 58232), (464, 42670), (493, 40160), (502, 39440), (544, 36395), (580, 34136), (680, 29116), (928, 21335), (986, 20080), (1004, 19720), (1160, 17068), (1255, 15776), (1360, 14558), (1972, 10040), (2008, 9860), (2320, 8534), (2465, 8032), (2510, 7888), (2720, 7279), (3944, 5020), (4016, 4930), (4267, 4640)]