19966359

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{307}}^1$

素因数の和:499

約数の個数: 32

約数和(自身を含む): 32327680

約数和(自身を除く): 12361321

約数列:

[1, 3, 7, 19, 21, 57, 133, 163, 307, 399, 489, 921, 1141, 2149, 3097, 3423, 5833, 6447, 9291, 17499, 21679, 40831, 50041, 65037, 122493, 150123, 350287, 950779, 1050861, 2852337, 6655453, 19966359]

約数ペア:

[(1, 19966359), (3, 6655453), (7, 2852337), (19, 1050861), (21, 950779), (57, 350287), (133, 150123), (163, 122493), (307, 65037), (399, 50041), (489, 40831), (921, 21679), (1141, 17499), (2149, 9291), (3097, 6447), (3423, 5833)]