21159268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9463}}^1$

素因数の和:9523

約数の個数: 24

約数和(自身を含む): 40808768

約数和(自身を除く): 19649500

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9463, 18926, 37852, 123019, 246038, 406909, 492076, 813818, 1627636, 5289817, 10579634, 21159268]

約数ペア:

[(1, 21159268), (2, 10579634), (4, 5289817), (13, 1627636), (26, 813818), (43, 492076), (52, 406909), (86, 246038), (172, 123019), (559, 37852), (1118, 18926), (2236, 9463)]