20867613

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:629

約数の個数: 24

約数和(自身を含む): 30568320

約数和(自身を除く): 9700707

約数列:

[1, 3, 13, 39, 79, 169, 237, 507, 521, 1027, 1563, 3081, 6773, 13351, 20319, 40053, 41159, 88049, 123477, 264147, 535067, 1605201, 6955871, 20867613]

約数ペア:

[(1, 20867613), (3, 6955871), (13, 1605201), (39, 535067), (79, 264147), (169, 123477), (237, 88049), (507, 41159), (521, 40053), (1027, 20319), (1563, 13351), (3081, 6773)]