21894649

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{619}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 26030080

約数和(自身を除く): 4135431

約数列:

[1, 7, 31, 163, 217, 619, 1141, 4333, 5053, 19189, 35371, 100897, 134323, 706279, 3127807, 21894649]

約数ペア:

[(1, 21894649), (7, 3127807), (31, 706279), (163, 134323), (217, 100897), (619, 35371), (1141, 19189), (4333, 5053)]