20280988

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{55717}}^1$

素因数の和:55741

約数の個数: 24

約数和(自身を含む): 43682912

約数和(自身を除く): 23401924

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 55717, 111434, 222868, 390019, 724321, 780038, 1448642, 1560076, 2897284, 5070247, 10140494, 20280988]

約数ペア:

[(1, 20280988), (2, 10140494), (4, 5070247), (7, 2897284), (13, 1560076), (14, 1448642), (26, 780038), (28, 724321), (52, 390019), (91, 222868), (182, 111434), (364, 55717)]