128468405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 192326400

約数和(自身を除く): 63857995

約数列:

[1, 5, 13, 17, 19, 29, 65, 85, 95, 145, 211, 221, 247, 323, 377, 493, 551, 1055, 1105, 1235, 1615, 1885, 2465, 2743, 2755, 3587, 4009, 4199, 6119, 6409, 7163, 9367, 13715, 17935, 20045, 20995, 30595, 32045, 35815, 46631, 46835, 52117, 68153, 79547, 104023, 116261, 121771, 233155, 260585, 340765, 397735, 520115, 581305, 608855, 885989, 1352299, 1511393, 1976437, 4429945, 6761495, 7556965, 9882185, 25693681, 128468405]

約数ペア:

[(1, 128468405), (5, 25693681), (13, 9882185), (17, 7556965), (19, 6761495), (29, 4429945), (65, 1976437), (85, 1511393), (95, 1352299), (145, 885989), (211, 608855), (221, 581305), (247, 520115), (323, 397735), (377, 340765), (493, 260585), (551, 233155), (1055, 121771), (1105, 116261), (1235, 104023), (1615, 79547), (1885, 68153), (2465, 52117), (2743, 46835), (2755, 46631), (3587, 35815), (4009, 32045), (4199, 30595), (6119, 20995), (6409, 20045), (7163, 17935), (9367, 13715)]