21277035

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{983}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 40832064

約数和(自身を除く): 19555029

約数列:

[1, 3, 5, 9, 13, 15, 37, 39, 45, 65, 111, 117, 185, 195, 333, 481, 555, 585, 983, 1443, 1665, 2405, 2949, 4329, 4915, 7215, 8847, 12779, 14745, 21645, 36371, 38337, 44235, 63895, 109113, 115011, 181855, 191685, 327339, 472823, 545565, 575055, 1418469, 1636695, 2364115, 4255407, 7092345, 21277035]

約数ペア:

[(1, 21277035), (3, 7092345), (5, 4255407), (9, 2364115), (13, 1636695), (15, 1418469), (37, 575055), (39, 545565), (45, 472823), (65, 327339), (111, 191685), (117, 181855), (185, 115011), (195, 109113), (333, 63895), (481, 44235), (555, 38337), (585, 36371), (983, 21645), (1443, 14745), (1665, 12779), (2405, 8847), (2949, 7215), (4329, 4915)]