19258421

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:658

約数の個数: 20

約数和(自身を含む): 24234252

約数和(自身を除く): 4975831

約数列:

[1, 7, 13, 49, 91, 343, 617, 637, 2401, 4319, 4459, 8021, 30233, 31213, 56147, 211631, 393029, 1481417, 2751203, 19258421]

約数ペア:

[(1, 19258421), (7, 2751203), (13, 1481417), (49, 393029), (91, 211631), (343, 56147), (617, 31213), (637, 30233), (2401, 8021), (4319, 4459)]