21417488

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19979}}^1$

素因数の和:20054

約数の個数: 20

約数和(自身を含む): 42117840

約数和(自身を除く): 20700352

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19979, 39958, 79916, 159832, 319664, 1338593, 2677186, 5354372, 10708744, 21417488]

約数ペア:

[(1, 21417488), (2, 10708744), (4, 5354372), (8, 2677186), (16, 1338593), (67, 319664), (134, 159832), (268, 79916), (536, 39958), (1072, 19979)]