21043248885

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2081}}^1\times {\mathrm{11827}}^1$

素因数の和:13938

約数の個数: 48

約数和(自身を含む): 38416397760

約数和(自身を除く): 17373148875

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 2081, 6243, 10405, 11827, 18729, 31215, 35481, 39539, 59135, 93645, 106443, 118617, 177405, 197695, 224713, 355851, 532215, 593085, 674139, 1123565, 1779255, 2022417, 3370695, 10112085, 24611987, 73835961, 123059935, 221507883, 369179805, 467627753, 1107539415, 1402883259, 2338138765, 4208649777, 7014416295, 21043248885]

約数ペア:

[(1, 21043248885), (3, 7014416295), (5, 4208649777), (9, 2338138765), (15, 1402883259), (19, 1107539415), (45, 467627753), (57, 369179805), (95, 221507883), (171, 123059935), (285, 73835961), (855, 24611987), (2081, 10112085), (6243, 3370695), (10405, 2022417), (11827, 1779255), (18729, 1123565), (31215, 674139), (35481, 593085), (39539, 532215), (59135, 355851), (93645, 224713), (106443, 197695), (118617, 177405)]