19745245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{167}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 7688483

約数列:

[1, 5, 13, 17, 65, 85, 107, 167, 221, 535, 835, 1105, 1391, 1819, 2171, 2839, 6955, 9095, 10855, 14195, 17869, 23647, 36907, 89345, 118235, 184535, 232297, 303773, 1161485, 1518865, 3949049, 19745245]

約数ペア:

[(1, 19745245), (5, 3949049), (13, 1518865), (17, 1161485), (65, 303773), (85, 232297), (107, 184535), (167, 118235), (221, 89345), (535, 36907), (835, 23647), (1105, 17869), (1391, 14195), (1819, 10855), (2171, 9095), (2839, 6955)]