1991967747

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{397}}^1$

素因数の和:561

約数の個数: 96

約数和(自身を含む): 3528126720

約数和(自身を除く): 1536158973

約数列:

[1, 3, 7, 11, 21, 29, 33, 49, 77, 87, 107, 147, 203, 231, 319, 321, 397, 539, 609, 749, 957, 1177, 1191, 1421, 1617, 2233, 2247, 2779, 3103, 3531, 4263, 4367, 5243, 6699, 8239, 8337, 9309, 11513, 13101, 15631, 15729, 19453, 21721, 24717, 30569, 34133, 34539, 42479, 46893, 57673, 58359, 65163, 80591, 91707, 102399, 126643, 127437, 152047, 173019, 213983, 238931, 241773, 297353, 379929, 456141, 467269, 564137, 641949, 716793, 886501, 892059, 1231891, 1401807, 1672517, 1692411, 2081471, 2659503, 3270883, 3695673, 5017551, 6205507, 6244413, 8623237, 9812649, 13550801, 18616521, 22896181, 25869711, 40652403, 60362659, 68688543, 94855607, 181087977, 284566821, 663989249, 1991967747]

約数ペア:

[(1, 1991967747), (3, 663989249), (7, 284566821), (11, 181087977), (21, 94855607), (29, 68688543), (33, 60362659), (49, 40652403), (77, 25869711), (87, 22896181), (107, 18616521), (147, 13550801), (203, 9812649), (231, 8623237), (319, 6244413), (321, 6205507), (397, 5017551), (539, 3695673), (609, 3270883), (749, 2659503), (957, 2081471), (1177, 1692411), (1191, 1672517), (1421, 1401807), (1617, 1231891), (2233, 892059), (2247, 886501), (2779, 716793), (3103, 641949), (3531, 564137), (4263, 467269), (4367, 456141), (5243, 379929), (6699, 297353), (8239, 241773), (8337, 238931), (9309, 213983), (11513, 173019), (13101, 152047), (15631, 127437), (15729, 126643), (19453, 102399), (21721, 91707), (24717, 80591), (30569, 65163), (34133, 58359), (34539, 57673), (42479, 46893)]