19891275

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{15601}}^1$

素因数の和:15631

約数の個数: 24

約数和(自身を含む): 34823664

約数和(自身を除く): 14932389

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 15601, 46803, 78005, 234015, 265217, 390025, 795651, 1170075, 1326085, 3978255, 6630425, 19891275]

約数ペア:

[(1, 19891275), (3, 6630425), (5, 3978255), (15, 1326085), (17, 1170075), (25, 795651), (51, 390025), (75, 265217), (85, 234015), (255, 78005), (425, 46803), (1275, 15601)]