21388112

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{13781}}^1$

素因数の和:13886

約数の個数: 20

約数和(自身を含む): 41869716

約数和(自身を除く): 20481604

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 13781, 27562, 55124, 110248, 220496, 1336757, 2673514, 5347028, 10694056, 21388112]

約数ペア:

[(1, 21388112), (2, 10694056), (4, 5347028), (8, 2673514), (16, 1336757), (97, 220496), (194, 110248), (388, 55124), (776, 27562), (1552, 13781)]