21313395

素因数分解:

$3^3\times 5^1\times {\mathrm{157877}}^1$

素因数の和:157891

約数の個数: 16

約数和(自身を含む): 37890720

約数和(自身を除く): 16577325

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157877, 473631, 789385, 1420893, 2368155, 4262679, 7104465, 21313395]

約数ペア:

[(1, 21313395), (3, 7104465), (5, 4262679), (9, 2368155), (15, 1420893), (27, 789385), (45, 473631), (135, 157877)]