9720980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15679}}^1$

素因数の和:15719

約数の個数: 24

約数和(自身を含む): 21073920

約数和(自身を除く): 11352940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 15679, 31358, 62716, 78395, 156790, 313580, 486049, 972098, 1944196, 2430245, 4860490, 9720980]

約数ペア:

[(1, 9720980), (2, 4860490), (4, 2430245), (5, 1944196), (10, 972098), (20, 486049), (31, 313580), (62, 156790), (124, 78395), (155, 62716), (310, 31358), (620, 15679)]