638408680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1381}}^1$

素因数の和:1539

約数の個数: 128

約数和(自身を含む): 1783111680

約数和(自身を除く): 1144703000

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 127, 130, 140, 182, 254, 260, 280, 364, 455, 508, 520, 635, 728, 889, 910, 1016, 1270, 1381, 1651, 1778, 1820, 2540, 2762, 3302, 3556, 3640, 4445, 5080, 5524, 6604, 6905, 7112, 8255, 8890, 9667, 11048, 11557, 13208, 13810, 16510, 17780, 17953, 19334, 23114, 27620, 33020, 35560, 35906, 38668, 46228, 48335, 55240, 57785, 66040, 71812, 77336, 89765, 92456, 96670, 115570, 125671, 143624, 175387, 179530, 193340, 231140, 251342, 350774, 359060, 386680, 462280, 502684, 628355, 701548, 718120, 876935, 1005368, 1227709, 1256710, 1403096, 1753870, 2280031, 2455418, 2513420, 3507740, 4560062, 4910836, 5026840, 6138545, 7015480, 9120124, 9821672, 11400155, 12277090, 15960217, 18240248, 22800310, 24554180, 31920434, 45600620, 49108360, 63840868, 79801085, 91201240, 127681736, 159602170, 319204340, 638408680]

約数ペア:

[(1, 638408680), (2, 319204340), (4, 159602170), (5, 127681736), (7, 91201240), (8, 79801085), (10, 63840868), (13, 49108360), (14, 45600620), (20, 31920434), (26, 24554180), (28, 22800310), (35, 18240248), (40, 15960217), (52, 12277090), (56, 11400155), (65, 9821672), (70, 9120124), (91, 7015480), (104, 6138545), (127, 5026840), (130, 4910836), (140, 4560062), (182, 3507740), (254, 2513420), (260, 2455418), (280, 2280031), (364, 1753870), (455, 1403096), (508, 1256710), (520, 1227709), (635, 1005368), (728, 876935), (889, 718120), (910, 701548), (1016, 628355), (1270, 502684), (1381, 462280), (1651, 386680), (1778, 359060), (1820, 350774), (2540, 251342), (2762, 231140), (3302, 193340), (3556, 179530), (3640, 175387), (4445, 143624), (5080, 125671), (5524, 115570), (6604, 96670), (6905, 92456), (7112, 89765), (8255, 77336), (8890, 71812), (9667, 66040), (11048, 57785), (11557, 55240), (13208, 48335), (13810, 46228), (16510, 38668), (17780, 35906), (17953, 35560), (19334, 33020), (23114, 27620)]