21081088

素因数分解:

$2^{10}\times 7^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:217

約数の個数: 88

約数和(自身を含む): 51289632

約数和(自身を除く): 30208544

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 128, 136, 173, 224, 238, 256, 272, 346, 448, 476, 512, 544, 692, 896, 952, 1024, 1088, 1211, 1384, 1792, 1904, 2176, 2422, 2768, 2941, 3584, 3808, 4352, 4844, 5536, 5882, 7168, 7616, 8704, 9688, 11072, 11764, 15232, 17408, 19376, 20587, 22144, 23528, 30464, 38752, 41174, 44288, 47056, 60928, 77504, 82348, 88576, 94112, 121856, 155008, 164696, 177152, 188224, 310016, 329392, 376448, 620032, 658784, 752896, 1240064, 1317568, 1505792, 2635136, 3011584, 5270272, 10540544, 21081088]

約数ペア:

[(1, 21081088), (2, 10540544), (4, 5270272), (7, 3011584), (8, 2635136), (14, 1505792), (16, 1317568), (17, 1240064), (28, 752896), (32, 658784), (34, 620032), (56, 376448), (64, 329392), (68, 310016), (112, 188224), (119, 177152), (128, 164696), (136, 155008), (173, 121856), (224, 94112), (238, 88576), (256, 82348), (272, 77504), (346, 60928), (448, 47056), (476, 44288), (512, 41174), (544, 38752), (692, 30464), (896, 23528), (952, 22144), (1024, 20587), (1088, 19376), (1211, 17408), (1384, 15232), (1792, 11764), (1904, 11072), (2176, 9688), (2422, 8704), (2768, 7616), (2941, 7168), (3584, 5882), (3808, 5536), (4352, 4844)]