321646

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:243

約数の個数: 16

約数和(自身を含む): 529200

約数和(自身を除く): 207554

約数列:

[1, 2, 13, 26, 89, 139, 178, 278, 1157, 1807, 2314, 3614, 12371, 24742, 160823, 321646]

約数ペア:

[(1, 321646), (2, 160823), (13, 24742), (26, 12371), (89, 3614), (139, 2314), (178, 1807), (278, 1157)]