21881988

素因数分解:

$2^2\times 3^4\times {\mathrm{67537}}^1$

素因数の和:67553

約数の個数: 30

約数和(自身を含む): 57204686

約数和(自身を除く): 35322698

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324, 67537, 135074, 202611, 270148, 405222, 607833, 810444, 1215666, 1823499, 2431332, 3646998, 5470497, 7293996, 10940994, 21881988]

約数ペア:

[(1, 21881988), (2, 10940994), (3, 7293996), (4, 5470497), (6, 3646998), (9, 2431332), (12, 1823499), (18, 1215666), (27, 810444), (36, 607833), (54, 405222), (81, 270148), (108, 202611), (162, 135074), (324, 67537)]