21787003

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{1033}}^1$

素因数の和:1194

約数の個数: 16

約数和(自身を含む): 26205696

約数和(自身を除く): 4418693

約数列:

[1, 7, 23, 131, 161, 917, 1033, 3013, 7231, 21091, 23759, 135323, 166313, 947261, 3112429, 21787003]

約数ペア:

[(1, 21787003), (7, 3112429), (23, 947261), (131, 166313), (161, 135323), (917, 23759), (1033, 21091), (3013, 7231)]