19965868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{599}}^1\times {\mathrm{641}}^1$

素因数の和:1257

約数の個数: 24

約数和(自身を含む): 37749600

約数和(自身を除く): 17783732

約数列:

[1, 2, 4, 13, 26, 52, 599, 641, 1198, 1282, 2396, 2564, 7787, 8333, 15574, 16666, 31148, 33332, 383959, 767918, 1535836, 4991467, 9982934, 19965868]

約数ペア:

[(1, 19965868), (2, 9982934), (4, 4991467), (13, 1535836), (26, 767918), (52, 383959), (599, 33332), (641, 31148), (1198, 16666), (1282, 15574), (2396, 8333), (2564, 7787)]