18658969

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{587}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 22579200

約数和(自身を除く): 3920231

約数列:

[1, 7, 19, 133, 239, 587, 1673, 4109, 4541, 11153, 31787, 78071, 140293, 982051, 2665567, 18658969]

約数ペア:

[(1, 18658969), (7, 2665567), (19, 982051), (133, 140293), (239, 78071), (587, 31787), (1673, 11153), (4109, 4541)]