21573356

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 23961364

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 139, 161, 241, 278, 322, 482, 556, 644, 964, 973, 1687, 1946, 3197, 3374, 3892, 5543, 6394, 6748, 11086, 12788, 22172, 22379, 33499, 38801, 44758, 66998, 77602, 89516, 133996, 155204, 234493, 468986, 770477, 937972, 1540954, 3081908, 5393339, 10786678, 21573356]

約数ペア:

[(1, 21573356), (2, 10786678), (4, 5393339), (7, 3081908), (14, 1540954), (23, 937972), (28, 770477), (46, 468986), (92, 234493), (139, 155204), (161, 133996), (241, 89516), (278, 77602), (322, 66998), (482, 44758), (556, 38801), (644, 33499), (964, 22379), (973, 22172), (1687, 12788), (1946, 11086), (3197, 6748), (3374, 6394), (3892, 5543)]