21751408

素因数分解:

$2^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1237}}^1$

素因数の和:1409

約数の個数: 40

約数和(自身を含む): 48509792

約数和(自身を除く): 26758384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 157, 314, 628, 1099, 1237, 1256, 2198, 2474, 2512, 4396, 4948, 8659, 8792, 9896, 17318, 17584, 19792, 34636, 69272, 138544, 194209, 388418, 776836, 1359463, 1553672, 2718926, 3107344, 5437852, 10875704, 21751408]

約数ペア:

[(1, 21751408), (2, 10875704), (4, 5437852), (7, 3107344), (8, 2718926), (14, 1553672), (16, 1359463), (28, 776836), (56, 388418), (112, 194209), (157, 138544), (314, 69272), (628, 34636), (1099, 19792), (1237, 17584), (1256, 17318), (2198, 9896), (2474, 8792), (2512, 8659), (4396, 4948)]