21662816

素因数分解:

$2^5\times 7^1\times {\mathrm{97}}^1\times {\mathrm{997}}^1$

素因数の和:1111

約数の個数: 48

約数和(自身を含む): 49293216

約数和(自身を除く): 27630400

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 97, 112, 194, 224, 388, 679, 776, 997, 1358, 1552, 1994, 2716, 3104, 3988, 5432, 6979, 7976, 10864, 13958, 15952, 21728, 27916, 31904, 55832, 96709, 111664, 193418, 223328, 386836, 676963, 773672, 1353926, 1547344, 2707852, 3094688, 5415704, 10831408, 21662816]

約数ペア:

[(1, 21662816), (2, 10831408), (4, 5415704), (7, 3094688), (8, 2707852), (14, 1547344), (16, 1353926), (28, 773672), (32, 676963), (56, 386836), (97, 223328), (112, 193418), (194, 111664), (224, 96709), (388, 55832), (679, 31904), (776, 27916), (997, 21728), (1358, 15952), (1552, 13958), (1994, 10864), (2716, 7976), (3104, 6979), (3988, 5432)]