20675145

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{911}}^1$

素因数の和:1025

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 14783415

約数列:

[1, 3, 5, 15, 17, 51, 85, 89, 255, 267, 445, 911, 1335, 1513, 2733, 4539, 4555, 7565, 13665, 15487, 22695, 46461, 77435, 81079, 232305, 243237, 405395, 1216185, 1378343, 4135029, 6891715, 20675145]

約数ペア:

[(1, 20675145), (3, 6891715), (5, 4135029), (15, 1378343), (17, 1216185), (51, 405395), (85, 243237), (89, 232305), (255, 81079), (267, 77435), (445, 46461), (911, 22695), (1335, 15487), (1513, 13665), (2733, 7565), (4539, 4555)]