81509493

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1149

約数の個数: 32

約数和(自身を含む): 123621120

約数和(自身を除く): 42111627

約数列:

[1, 3, 13, 23, 39, 69, 89, 267, 299, 897, 1021, 1157, 2047, 3063, 3471, 6141, 13273, 23483, 26611, 39819, 70449, 79833, 90869, 272607, 305279, 915837, 1181297, 2089987, 3543891, 6269961, 27169831, 81509493]

約数ペア:

[(1, 81509493), (3, 27169831), (13, 6269961), (23, 3543891), (39, 2089987), (69, 1181297), (89, 915837), (267, 305279), (299, 272607), (897, 90869), (1021, 79833), (1157, 70449), (2047, 39819), (3063, 26611), (3471, 23483), (6141, 13273)]