21023475

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1499}}^1$

素因数の和:1540

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 19152525

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 51, 55, 75, 85, 165, 187, 255, 275, 425, 561, 825, 935, 1275, 1499, 2805, 4497, 4675, 7495, 14025, 16489, 22485, 25483, 37475, 49467, 76449, 82445, 112425, 127415, 247335, 280313, 382245, 412225, 637075, 840939, 1236675, 1401565, 1911225, 4204695, 7007825, 21023475]

約数ペア:

[(1, 21023475), (3, 7007825), (5, 4204695), (11, 1911225), (15, 1401565), (17, 1236675), (25, 840939), (33, 637075), (51, 412225), (55, 382245), (75, 280313), (85, 247335), (165, 127415), (187, 112425), (255, 82445), (275, 76449), (425, 49467), (561, 37475), (825, 25483), (935, 22485), (1275, 16489), (1499, 14025), (2805, 7495), (4497, 4675)]