21000776

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138163}}^1$

素因数の和:138188

約数の個数: 16

約数和(自身を含む): 41449200

約数和(自身を除く): 20448424

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138163, 276326, 552652, 1105304, 2625097, 5250194, 10500388, 21000776]

約数ペア:

[(1, 21000776), (2, 10500388), (4, 5250194), (8, 2625097), (19, 1105304), (38, 552652), (76, 276326), (152, 138163)]