21671328

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{271}}^1$

素因数の和:315

約数の個数: 144

約数和(自身を含む): 70326144

約数和(自身を除く): 48654816

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 21, 24, 28, 32, 34, 42, 48, 49, 51, 56, 68, 84, 96, 98, 102, 112, 119, 136, 147, 168, 196, 204, 224, 238, 271, 272, 294, 336, 357, 392, 408, 476, 542, 544, 588, 672, 714, 784, 813, 816, 833, 952, 1084, 1176, 1428, 1568, 1626, 1632, 1666, 1897, 1904, 2168, 2352, 2499, 2856, 3252, 3332, 3794, 3808, 4336, 4607, 4704, 4998, 5691, 5712, 6504, 6664, 7588, 8672, 9214, 9996, 11382, 11424, 13008, 13279, 13328, 13821, 15176, 18428, 19992, 22764, 26016, 26558, 26656, 27642, 30352, 32249, 36856, 39837, 39984, 45528, 53116, 55284, 60704, 64498, 73712, 79674, 79968, 91056, 96747, 106232, 110568, 128996, 147424, 159348, 182112, 193494, 212464, 221136, 225743, 257992, 318696, 386988, 424928, 442272, 451486, 515984, 637392, 677229, 773976, 902972, 1031968, 1274784, 1354458, 1547952, 1805944, 2708916, 3095904, 3611888, 5417832, 7223776, 10835664, 21671328]

約数ペア:

[(1, 21671328), (2, 10835664), (3, 7223776), (4, 5417832), (6, 3611888), (7, 3095904), (8, 2708916), (12, 1805944), (14, 1547952), (16, 1354458), (17, 1274784), (21, 1031968), (24, 902972), (28, 773976), (32, 677229), (34, 637392), (42, 515984), (48, 451486), (49, 442272), (51, 424928), (56, 386988), (68, 318696), (84, 257992), (96, 225743), (98, 221136), (102, 212464), (112, 193494), (119, 182112), (136, 159348), (147, 147424), (168, 128996), (196, 110568), (204, 106232), (224, 96747), (238, 91056), (271, 79968), (272, 79674), (294, 73712), (336, 64498), (357, 60704), (392, 55284), (408, 53116), (476, 45528), (542, 39984), (544, 39837), (588, 36856), (672, 32249), (714, 30352), (784, 27642), (813, 26656), (816, 26558), (833, 26016), (952, 22764), (1084, 19992), (1176, 18428), (1428, 15176), (1568, 13821), (1626, 13328), (1632, 13279), (1666, 13008), (1897, 11424), (1904, 11382), (2168, 9996), (2352, 9214), (2499, 8672), (2856, 7588), (3252, 6664), (3332, 6504), (3794, 5712), (3808, 5691), (4336, 4998), (4607, 4704)]