20663013

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{51787}}^1$

素因数の和:51816

約数の個数: 16

約数和(自身を含む): 33144320

約数和(自身を除く): 12481307

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 51787, 155361, 362509, 983953, 1087527, 2951859, 6887671, 20663013]

約数ペア:

[(1, 20663013), (3, 6887671), (7, 2951859), (19, 1087527), (21, 983953), (57, 362509), (133, 155361), (399, 51787)]