21516887

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{983}}^1$

素因数の和:1102

約数の個数: 16

約数和(自身を含む): 25505280

約数和(自身を除く): 3988393

約数列:

[1, 7, 53, 59, 371, 413, 983, 3127, 6881, 21889, 52099, 57997, 364693, 405979, 3073841, 21516887]

約数ペア:

[(1, 21516887), (7, 3073841), (53, 405979), (59, 364693), (371, 57997), (413, 52099), (983, 21889), (3127, 6881)]