21171088

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{547}}^1$

素因数の和:655

約数の個数: 40

約数和(自身を含む): 42809760

約数和(自身を除く): 21638672

約数列:

[1, 2, 4, 8, 16, 41, 59, 82, 118, 164, 236, 328, 472, 547, 656, 944, 1094, 2188, 2419, 4376, 4838, 8752, 9676, 19352, 22427, 32273, 38704, 44854, 64546, 89708, 129092, 179416, 258184, 358832, 516368, 1323193, 2646386, 5292772, 10585544, 21171088]

約数ペア:

[(1, 21171088), (2, 10585544), (4, 5292772), (8, 2646386), (16, 1323193), (41, 516368), (59, 358832), (82, 258184), (118, 179416), (164, 129092), (236, 89708), (328, 64546), (472, 44854), (547, 38704), (656, 32273), (944, 22427), (1094, 19352), (2188, 9676), (2419, 8752), (4376, 4838)]