21982905

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3673}}^1$

素因数の和:3710

約数の個数: 48

約数和(自身を含む): 45851520

約数和(自身を除く): 23868615

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3673, 5985, 11019, 18365, 25711, 33057, 55095, 69787, 77133, 128555, 165285, 209361, 231399, 348935, 385665, 488509, 628083, 1046805, 1156995, 1465527, 2442545, 3140415, 4396581, 7327635, 21982905]

約数ペア:

[(1, 21982905), (3, 7327635), (5, 4396581), (7, 3140415), (9, 2442545), (15, 1465527), (19, 1156995), (21, 1046805), (35, 628083), (45, 488509), (57, 385665), (63, 348935), (95, 231399), (105, 209361), (133, 165285), (171, 128555), (285, 77133), (315, 69787), (399, 55095), (665, 33057), (855, 25711), (1197, 18365), (1995, 11019), (3673, 5985)]