20688638

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:260

約数の個数: 32

約数和(自身を含む): 33694272

約数和(自身を除く): 13005634

約数列:

[1, 2, 23, 46, 61, 73, 101, 122, 146, 202, 1403, 1679, 2323, 2806, 3358, 4453, 4646, 6161, 7373, 8906, 12322, 14746, 102419, 141703, 169579, 204838, 283406, 339158, 449753, 899506, 10344319, 20688638]

約数ペア:

[(1, 20688638), (2, 10344319), (23, 899506), (46, 449753), (61, 339158), (73, 283406), (101, 204838), (122, 169579), (146, 141703), (202, 102419), (1403, 14746), (1679, 12322), (2323, 8906), (2806, 7373), (3358, 6161), (4453, 4646)]