21298696

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140123}}^1$

素因数の和:140148

約数の個数: 16

約数和(自身を含む): 42037200

約数和(自身を除く): 20738504

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140123, 280246, 560492, 1120984, 2662337, 5324674, 10649348, 21298696]

約数ペア:

[(1, 21298696), (2, 10649348), (4, 5324674), (8, 2662337), (19, 1120984), (38, 560492), (76, 280246), (152, 140123)]