19464575

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{271}}^1$

素因数の和:324

約数の個数: 36

約数和(自身を含む): 27775008

約数和(自身を除く): 8310433

約数列:

[1, 5, 13, 17, 25, 65, 85, 169, 221, 271, 325, 425, 845, 1105, 1355, 2873, 3523, 4225, 4607, 5525, 6775, 14365, 17615, 23035, 45799, 59891, 71825, 88075, 115175, 228995, 299455, 778583, 1144975, 1497275, 3892915, 19464575]

約数ペア:

[(1, 19464575), (5, 3892915), (13, 1497275), (17, 1144975), (25, 778583), (65, 299455), (85, 228995), (169, 115175), (221, 88075), (271, 71825), (325, 59891), (425, 45799), (845, 23035), (1105, 17615), (1355, 14365), (2873, 6775), (3523, 5525), (4225, 4607)]