21986408

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{977}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 43129800

約数和(自身を除く): 21143392

約数列:

[1, 2, 4, 8, 29, 58, 97, 116, 194, 232, 388, 776, 977, 1954, 2813, 3908, 5626, 7816, 11252, 22504, 28333, 56666, 94769, 113332, 189538, 226664, 379076, 758152, 2748301, 5496602, 10993204, 21986408]

約数ペア:

[(1, 21986408), (2, 10993204), (4, 5496602), (8, 2748301), (29, 758152), (58, 379076), (97, 226664), (116, 189538), (194, 113332), (232, 94769), (388, 56666), (776, 28333), (977, 22504), (1954, 11252), (2813, 7816), (3908, 5626)]