21307664

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1$

素因数の和:101

約数の個数: 120

約数和(自身を含む): 54425088

約数和(自身を除く): 33117424

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 19, 28, 31, 34, 38, 56, 62, 68, 76, 112, 119, 124, 133, 136, 152, 217, 238, 248, 266, 272, 304, 323, 361, 434, 476, 496, 527, 532, 589, 646, 722, 868, 952, 1054, 1064, 1178, 1292, 1444, 1736, 1904, 2108, 2128, 2261, 2356, 2527, 2584, 2888, 3472, 3689, 4123, 4216, 4522, 4712, 5054, 5168, 5776, 6137, 7378, 8246, 8432, 9044, 9424, 10013, 10108, 11191, 12274, 14756, 16492, 18088, 20026, 20216, 22382, 24548, 29512, 32984, 36176, 40052, 40432, 42959, 44764, 49096, 59024, 65968, 70091, 78337, 80104, 85918, 89528, 98192, 140182, 156674, 160208, 171836, 179056, 190247, 280364, 313348, 343672, 380494, 560728, 626696, 687344, 760988, 1121456, 1253392, 1331729, 1521976, 2663458, 3043952, 5326916, 10653832, 21307664]

約数ペア:

[(1, 21307664), (2, 10653832), (4, 5326916), (7, 3043952), (8, 2663458), (14, 1521976), (16, 1331729), (17, 1253392), (19, 1121456), (28, 760988), (31, 687344), (34, 626696), (38, 560728), (56, 380494), (62, 343672), (68, 313348), (76, 280364), (112, 190247), (119, 179056), (124, 171836), (133, 160208), (136, 156674), (152, 140182), (217, 98192), (238, 89528), (248, 85918), (266, 80104), (272, 78337), (304, 70091), (323, 65968), (361, 59024), (434, 49096), (476, 44764), (496, 42959), (527, 40432), (532, 40052), (589, 36176), (646, 32984), (722, 29512), (868, 24548), (952, 22382), (1054, 20216), (1064, 20026), (1178, 18088), (1292, 16492), (1444, 14756), (1736, 12274), (1904, 11191), (2108, 10108), (2128, 10013), (2261, 9424), (2356, 9044), (2527, 8432), (2584, 8246), (2888, 7378), (3472, 6137), (3689, 5776), (4123, 5168), (4216, 5054), (4522, 4712)]