28377505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 39559968

約数和(自身を除く): 11182463

約数列:

[1, 5, 13, 17, 61, 65, 85, 221, 305, 421, 793, 1037, 1105, 2105, 3965, 5185, 5473, 7157, 13481, 25681, 27365, 35785, 67405, 93041, 128405, 333853, 436577, 465205, 1669265, 2182885, 5675501, 28377505]

約数ペア:

[(1, 28377505), (5, 5675501), (13, 2182885), (17, 1669265), (61, 465205), (65, 436577), (85, 333853), (221, 128405), (305, 93041), (421, 67405), (793, 35785), (1037, 27365), (1105, 25681), (2105, 13481), (3965, 7157), (5185, 5473)]