20178861

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{3557}}^1$

素因数の和:3652

約数の個数: 16

約数和(自身を含む): 28236288

約数和(自身を除く): 8057427

約数列:

[1, 3, 31, 61, 93, 183, 1891, 3557, 5673, 10671, 110267, 216977, 330801, 650931, 6726287, 20178861]

約数ペア:

[(1, 20178861), (3, 6726287), (31, 650931), (61, 330801), (93, 216977), (183, 110267), (1891, 10671), (3557, 5673)]