21019791

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{3011}}^1$

素因数の和:3206

約数の個数: 16

約数和(自身を含む): 30360960

約数和(自身を除く): 9341169

約数列:

[1, 3, 13, 39, 179, 537, 2327, 3011, 6981, 9033, 39143, 117429, 538969, 1616907, 7006597, 21019791]

約数ペア:

[(1, 21019791), (3, 7006597), (13, 1616907), (39, 538969), (179, 117429), (537, 39143), (2327, 9033), (3011, 6981)]