20945223

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19891}}^1$

素因数の和:19916

約数の個数: 20

約数和(自身を含む): 33697048

約数和(自身を除く): 12751825

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19891, 59673, 179019, 258583, 537057, 775749, 1611171, 2327247, 6981741, 20945223]

約数ペア:

[(1, 20945223), (3, 6981741), (9, 2327247), (13, 1611171), (27, 775749), (39, 537057), (81, 258583), (117, 179019), (351, 59673), (1053, 19891)]