21100000004

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{277631579}}^1$

素因数の和:277631602

約数の個数: 12

約数和(自身を含む): 38868421200

約数和(自身を除く): 17768421196

約数列:

[1, 2, 4, 19, 38, 76, 277631579, 555263158, 1110526316, 5275000001, 10550000002, 21100000004]

約数ペア:

[(1, 21100000004), (2, 10550000002), (4, 5275000001), (19, 1110526316), (38, 555263158), (76, 277631579)]