21081375

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{2677}}^1$

素因数の和:2705

約数の個数: 48

約数和(自身を含む): 43447872

約数和(自身を除く): 22366497

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2625, 2677, 7875, 8031, 13385, 18739, 24093, 40155, 56217, 66925, 93695, 120465, 168651, 200775, 281085, 334625, 468475, 602325, 843255, 1003875, 1405425, 2342375, 3011625, 4216275, 7027125, 21081375]

約数ペア:

[(1, 21081375), (3, 7027125), (5, 4216275), (7, 3011625), (9, 2342375), (15, 1405425), (21, 1003875), (25, 843255), (35, 602325), (45, 468475), (63, 334625), (75, 281085), (105, 200775), (125, 168651), (175, 120465), (225, 93695), (315, 66925), (375, 56217), (525, 40155), (875, 24093), (1125, 18739), (1575, 13385), (2625, 8031), (2677, 7875)]