638516520

素因数分解:

$2^3\times 3^9\times 5^1\times {\mathrm{811}}^1$

素因数の和:849

約数の個数: 160

約数和(自身を含む): 2157613920

約数和(自身を除く): 1519097400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 648, 729, 810, 811, 972, 1080, 1215, 1458, 1620, 1622, 1944, 2187, 2430, 2433, 2916, 3240, 3244, 3645, 4055, 4374, 4860, 4866, 5832, 6488, 6561, 7290, 7299, 8110, 8748, 9720, 9732, 10935, 12165, 13122, 14580, 14598, 16220, 17496, 19464, 19683, 21870, 21897, 24330, 26244, 29160, 29196, 32440, 32805, 36495, 39366, 43740, 43794, 48660, 52488, 58392, 65610, 65691, 72990, 78732, 87480, 87588, 97320, 98415, 109485, 131220, 131382, 145980, 157464, 175176, 196830, 197073, 218970, 262440, 262764, 291960, 328455, 393660, 394146, 437940, 525528, 591219, 656910, 787320, 788292, 875880, 985365, 1182438, 1313820, 1576584, 1773657, 1970730, 2364876, 2627640, 2956095, 3547314, 3941460, 4729752, 5320971, 5912190, 7094628, 7882920, 8868285, 10641942, 11824380, 14189256, 15962913, 17736570, 21283884, 23648760, 26604855, 31925826, 35473140, 42567768, 53209710, 63851652, 70946280, 79814565, 106419420, 127703304, 159629130, 212838840, 319258260, 638516520]

約数ペア:

[(1, 638516520), (2, 319258260), (3, 212838840), (4, 159629130), (5, 127703304), (6, 106419420), (8, 79814565), (9, 70946280), (10, 63851652), (12, 53209710), (15, 42567768), (18, 35473140), (20, 31925826), (24, 26604855), (27, 23648760), (30, 21283884), (36, 17736570), (40, 15962913), (45, 14189256), (54, 11824380), (60, 10641942), (72, 8868285), (81, 7882920), (90, 7094628), (108, 5912190), (120, 5320971), (135, 4729752), (162, 3941460), (180, 3547314), (216, 2956095), (243, 2627640), (270, 2364876), (324, 1970730), (360, 1773657), (405, 1576584), (486, 1313820), (540, 1182438), (648, 985365), (729, 875880), (810, 788292), (811, 787320), (972, 656910), (1080, 591219), (1215, 525528), (1458, 437940), (1620, 394146), (1622, 393660), (1944, 328455), (2187, 291960), (2430, 262764), (2433, 262440), (2916, 218970), (3240, 197073), (3244, 196830), (3645, 175176), (4055, 157464), (4374, 145980), (4860, 131382), (4866, 131220), (5832, 109485), (6488, 98415), (6561, 97320), (7290, 87588), (7299, 87480), (8110, 78732), (8748, 72990), (9720, 65691), (9732, 65610), (10935, 58392), (12165, 52488), (13122, 48660), (14580, 43794), (14598, 43740), (16220, 39366), (17496, 36495), (19464, 32805), (19683, 32440), (21870, 29196), (21897, 29160), (24330, 26244)]