20121309145

素因数分解:

$5^1\times 7^1\times {\mathrm{1447}}^1\times {\mathrm{397301}}^1$

素因数の和:398760

約数の個数: 16

約数和(自身を含む): 27614078208

約数和(自身を除く): 7492769063

約数列:

[1, 5, 7, 35, 1447, 7235, 10129, 50645, 397301, 1986505, 2781107, 13905535, 574894547, 2874472735, 4024261829, 20121309145]

約数ペア:

[(1, 20121309145), (5, 4024261829), (7, 2874472735), (35, 574894547), (1447, 13905535), (7235, 2781107), (10129, 1986505), (50645, 397301)]