638144520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3221}}^1$

素因数の和:3375

約数の個数: 128

約数和(自身を含む): 2078576640

約数和(自身を除く): 1440432120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 127, 130, 156, 195, 254, 260, 312, 381, 390, 508, 520, 635, 762, 780, 1016, 1270, 1524, 1560, 1651, 1905, 2540, 3048, 3221, 3302, 3810, 4953, 5080, 6442, 6604, 7620, 8255, 9663, 9906, 12884, 13208, 15240, 16105, 16510, 19326, 19812, 24765, 25768, 32210, 33020, 38652, 39624, 41873, 48315, 49530, 64420, 66040, 77304, 83746, 96630, 99060, 125619, 128840, 167492, 193260, 198120, 209365, 251238, 334984, 386520, 409067, 418730, 502476, 628095, 818134, 837460, 1004952, 1227201, 1256190, 1636268, 1674920, 2045335, 2454402, 2512380, 3272536, 4090670, 4908804, 5024760, 5317871, 6136005, 8181340, 9817608, 10635742, 12272010, 15953613, 16362680, 21271484, 24544020, 26589355, 31907226, 42542968, 49088040, 53178710, 63814452, 79768065, 106357420, 127628904, 159536130, 212714840, 319072260, 638144520]

約数ペア:

[(1, 638144520), (2, 319072260), (3, 212714840), (4, 159536130), (5, 127628904), (6, 106357420), (8, 79768065), (10, 63814452), (12, 53178710), (13, 49088040), (15, 42542968), (20, 31907226), (24, 26589355), (26, 24544020), (30, 21271484), (39, 16362680), (40, 15953613), (52, 12272010), (60, 10635742), (65, 9817608), (78, 8181340), (104, 6136005), (120, 5317871), (127, 5024760), (130, 4908804), (156, 4090670), (195, 3272536), (254, 2512380), (260, 2454402), (312, 2045335), (381, 1674920), (390, 1636268), (508, 1256190), (520, 1227201), (635, 1004952), (762, 837460), (780, 818134), (1016, 628095), (1270, 502476), (1524, 418730), (1560, 409067), (1651, 386520), (1905, 334984), (2540, 251238), (3048, 209365), (3221, 198120), (3302, 193260), (3810, 167492), (4953, 128840), (5080, 125619), (6442, 99060), (6604, 96630), (7620, 83746), (8255, 77304), (9663, 66040), (9906, 64420), (12884, 49530), (13208, 48315), (15240, 41873), (16105, 39624), (16510, 38652), (19326, 33020), (19812, 32210), (24765, 25768)]