21860013

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{54787}}^1$

素因数の和:54816

約数の個数: 16

約数和(自身を含む): 35064320

約数和(自身を除く): 13204307

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 54787, 164361, 383509, 1040953, 1150527, 3122859, 7286671, 21860013]

約数ペア:

[(1, 21860013), (3, 7286671), (7, 3122859), (19, 1150527), (21, 1040953), (57, 383509), (133, 164361), (399, 54787)]