18780835

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 26049600

約数和(自身を除く): 7268765

約数列:

[1, 5, 17, 19, 29, 85, 95, 145, 323, 401, 493, 551, 1615, 2005, 2465, 2755, 6817, 7619, 9367, 11629, 34085, 38095, 46835, 58145, 129523, 197693, 220951, 647615, 988465, 1104755, 3756167, 18780835]

約数ペア:

[(1, 18780835), (5, 3756167), (17, 1104755), (19, 988465), (29, 647615), (85, 220951), (95, 197693), (145, 129523), (323, 58145), (401, 46835), (493, 38095), (551, 34085), (1615, 11629), (2005, 9367), (2465, 7619), (2755, 6817)]