20178417

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{12163}}^1$

素因数の和:12252

約数の個数: 16

約数和(自身を含む): 31139840

約数和(自身を除く): 10961423

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 12163, 36489, 85141, 255423, 960877, 2882631, 6726139, 20178417]

約数ペア:

[(1, 20178417), (3, 6726139), (7, 2882631), (21, 960877), (79, 255423), (237, 85141), (553, 36489), (1659, 12163)]