21263872

素因数分解:

$2^9\times 7^1\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:391

約数の個数: 80

約数和(自身を含む): 51559200

約数和(自身を除く): 30295328

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 224, 238, 256, 272, 349, 448, 476, 512, 544, 698, 896, 952, 1088, 1396, 1792, 1904, 2176, 2443, 2792, 3584, 3808, 4352, 4886, 5584, 5933, 7616, 8704, 9772, 11168, 11866, 15232, 19544, 22336, 23732, 30464, 39088, 41531, 44672, 47464, 60928, 78176, 83062, 89344, 94928, 156352, 166124, 178688, 189856, 312704, 332248, 379712, 625408, 664496, 759424, 1250816, 1328992, 1518848, 2657984, 3037696, 5315968, 10631936, 21263872]

約数ペア:

[(1, 21263872), (2, 10631936), (4, 5315968), (7, 3037696), (8, 2657984), (14, 1518848), (16, 1328992), (17, 1250816), (28, 759424), (32, 664496), (34, 625408), (56, 379712), (64, 332248), (68, 312704), (112, 189856), (119, 178688), (128, 166124), (136, 156352), (224, 94928), (238, 89344), (256, 83062), (272, 78176), (349, 60928), (448, 47464), (476, 44672), (512, 41531), (544, 39088), (698, 30464), (896, 23732), (952, 22336), (1088, 19544), (1396, 15232), (1792, 11866), (1904, 11168), (2176, 9772), (2443, 8704), (2792, 7616), (3584, 5933), (3808, 5584), (4352, 4886)]