20914497

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{691}}^1$

素因数の和:778

約数の個数: 32

約数和(自身を含む): 33216000

約数和(自身を除く): 12301503

約数列:

[1, 3, 9, 19, 27, 57, 59, 171, 177, 513, 531, 691, 1121, 1593, 2073, 3363, 6219, 10089, 13129, 18657, 30267, 39387, 40769, 118161, 122307, 354483, 366921, 774611, 1100763, 2323833, 6971499, 20914497]

約数ペア:

[(1, 20914497), (3, 6971499), (9, 2323833), (19, 1100763), (27, 774611), (57, 366921), (59, 354483), (171, 122307), (177, 118161), (513, 40769), (531, 39387), (691, 30267), (1121, 18657), (1593, 13129), (2073, 10089), (3363, 6219)]