28129135

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 37324800

約数和(自身を除く): 9195665

約数列:

[1, 5, 17, 59, 71, 79, 85, 295, 355, 395, 1003, 1207, 1343, 4189, 4661, 5015, 5609, 6035, 6715, 20945, 23305, 28045, 71213, 79237, 95353, 330931, 356065, 396185, 476765, 1654655, 5625827, 28129135]

約数ペア:

[(1, 28129135), (5, 5625827), (17, 1654655), (59, 476765), (71, 396185), (79, 356065), (85, 330931), (295, 95353), (355, 79237), (395, 71213), (1003, 28045), (1207, 23305), (1343, 20945), (4189, 6715), (4661, 6035), (5015, 5609)]