21318401

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:161

約数の個数: 32

約数和(自身を含む): 25740288

約数和(自身を除く): 4421887

約数列:

[1, 13, 23, 37, 41, 47, 299, 481, 533, 611, 851, 943, 1081, 1517, 1739, 1927, 11063, 12259, 14053, 19721, 22607, 25051, 34891, 39997, 44321, 71299, 453583, 519961, 576173, 926887, 1639877, 21318401]

約数ペア:

[(1, 21318401), (13, 1639877), (23, 926887), (37, 576173), (41, 519961), (47, 453583), (299, 71299), (481, 44321), (533, 39997), (611, 34891), (851, 25051), (943, 22607), (1081, 19721), (1517, 14053), (1739, 12259), (1927, 11063)]