19925275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{271}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 26409024

約数和(自身を除く): 6483749

約数列:

[1, 5, 17, 25, 85, 173, 271, 425, 865, 1355, 2941, 4325, 4607, 6775, 14705, 23035, 46883, 73525, 115175, 234415, 797011, 1172075, 3985055, 19925275]

約数ペア:

[(1, 19925275), (5, 3985055), (17, 1172075), (25, 797011), (85, 234415), (173, 115175), (271, 73525), (425, 46883), (865, 23035), (1355, 14705), (2941, 6775), (4325, 4607)]