642912123

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{21821}}^1$

素因数の和:21915

約数の個数: 32

約数和(自身を含む): 1039076352

約数和(自身を除く): 396164229

約数列:

[1, 3, 7, 21, 23, 61, 69, 161, 183, 427, 483, 1281, 1403, 4209, 9821, 21821, 29463, 65463, 152747, 458241, 501883, 1331081, 1505649, 3513181, 3993243, 9317567, 10539543, 27952701, 30614863, 91844589, 214304041, 642912123]

約数ペア:

[(1, 642912123), (3, 214304041), (7, 91844589), (21, 30614863), (23, 27952701), (61, 10539543), (69, 9317567), (161, 3993243), (183, 3513181), (427, 1505649), (483, 1331081), (1281, 501883), (1403, 458241), (4209, 152747), (9821, 65463), (21821, 29463)]