21000478565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{15881}}^1\times {\mathrm{24043}}^1$

素因数の和:39940

約数の個数: 16

約数和(自身を含む): 27494410176

約数和(自身を除く): 6493931611

約数列:

[1, 5, 11, 55, 15881, 24043, 79405, 120215, 174691, 264473, 873455, 1322365, 381826883, 1909134415, 4200095713, 21000478565]

約数ペア:

[(1, 21000478565), (5, 4200095713), (11, 1909134415), (55, 381826883), (15881, 1322365), (24043, 873455), (79405, 264473), (120215, 174691)]