21054584

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138517}}^1$

素因数の和:138542

約数の個数: 16

約数和(自身を含む): 41555400

約数和(自身を除く): 20500816

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138517, 277034, 554068, 1108136, 2631823, 5263646, 10527292, 21054584]

約数ペア:

[(1, 21054584), (2, 10527292), (4, 5263646), (8, 2631823), (19, 1108136), (38, 554068), (76, 277034), (152, 138517)]