27981855

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{571}}^1$

素因数の和:610

約数の個数: 60

約数和(自身を含む): 55231176

約数和(自身を除く): 27249321

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 121, 135, 165, 297, 363, 405, 495, 571, 605, 891, 1089, 1485, 1713, 1815, 2855, 3267, 4455, 5139, 5445, 6281, 8565, 9801, 15417, 16335, 18843, 25695, 31405, 46251, 49005, 56529, 69091, 77085, 94215, 169587, 207273, 231255, 282645, 345455, 508761, 621819, 847935, 1036365, 1865457, 2543805, 3109095, 5596371, 9327285, 27981855]

約数ペア:

[(1, 27981855), (3, 9327285), (5, 5596371), (9, 3109095), (11, 2543805), (15, 1865457), (27, 1036365), (33, 847935), (45, 621819), (55, 508761), (81, 345455), (99, 282645), (121, 231255), (135, 207273), (165, 169587), (297, 94215), (363, 77085), (405, 69091), (495, 56529), (571, 49005), (605, 46251), (891, 31405), (1089, 25695), (1485, 18843), (1713, 16335), (1815, 15417), (2855, 9801), (3267, 8565), (4455, 6281), (5139, 5445)]