81643605

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{907}}^1$

素因数の和:1285

約数の個数: 32

約数和(自身を含む): 138858624

約数和(自身を除く): 57215019

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 353, 907, 1059, 1765, 2721, 4535, 5295, 6001, 13605, 15419, 18003, 30005, 46257, 77095, 90015, 231285, 320171, 960513, 1600855, 4802565, 5442907, 16328721, 27214535, 81643605]

約数ペア:

[(1, 81643605), (3, 27214535), (5, 16328721), (15, 5442907), (17, 4802565), (51, 1600855), (85, 960513), (255, 320171), (353, 231285), (907, 90015), (1059, 77095), (1765, 46257), (2721, 30005), (4535, 18003), (5295, 15419), (6001, 13605)]