128216921

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{12203}}^1$

素因数の和:12308

約数の個数: 16

約数和(自身を含む): 156211200

約数和(自身を除く): 27994279

約数列:

[1, 7, 19, 79, 133, 553, 1501, 10507, 12203, 85421, 231857, 964037, 1622999, 6748259, 18316703, 128216921]

約数ペア:

[(1, 128216921), (7, 18316703), (19, 6748259), (79, 1622999), (133, 964037), (553, 231857), (1501, 85421), (10507, 12203)]