21066705

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 41454504

約数和(自身を除く): 20387799

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 53, 55, 73, 99, 121, 159, 165, 219, 265, 363, 365, 477, 495, 583, 605, 657, 795, 803, 1089, 1095, 1749, 1815, 2385, 2409, 2915, 3285, 3869, 4015, 5247, 5445, 6413, 7227, 8745, 8833, 11607, 12045, 19239, 19345, 26235, 26499, 32065, 34821, 36135, 42559, 44165, 57717, 58035, 79497, 96195, 127677, 132495, 174105, 212795, 288585, 383031, 397485, 468149, 638385, 1404447, 1915155, 2340745, 4213341, 7022235, 21066705]

約数ペア:

[(1, 21066705), (3, 7022235), (5, 4213341), (9, 2340745), (11, 1915155), (15, 1404447), (33, 638385), (45, 468149), (53, 397485), (55, 383031), (73, 288585), (99, 212795), (121, 174105), (159, 132495), (165, 127677), (219, 96195), (265, 79497), (363, 58035), (365, 57717), (477, 44165), (495, 42559), (583, 36135), (605, 34821), (657, 32065), (795, 26499), (803, 26235), (1089, 19345), (1095, 19239), (1749, 12045), (1815, 11607), (2385, 8833), (2409, 8745), (2915, 7227), (3285, 6413), (3869, 5445), (4015, 5247)]