19917285

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2111}}^1$

素因数の和:2173

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 14753307

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2111, 3145, 6333, 9435, 10555, 31665, 35887, 78107, 107661, 179435, 234321, 390535, 538305, 1171605, 1327819, 3983457, 6639095, 19917285]

約数ペア:

[(1, 19917285), (3, 6639095), (5, 3983457), (15, 1327819), (17, 1171605), (37, 538305), (51, 390535), (85, 234321), (111, 179435), (185, 107661), (255, 78107), (555, 35887), (629, 31665), (1887, 10555), (2111, 9435), (3145, 6333)]