21984105

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{277}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 42594048

約数和(自身を除く): 20609943

約数列:

[1, 3, 5, 11, 13, 15, 33, 37, 39, 55, 65, 111, 143, 165, 185, 195, 277, 407, 429, 481, 555, 715, 831, 1221, 1385, 1443, 2035, 2145, 2405, 3047, 3601, 4155, 5291, 6105, 7215, 9141, 10249, 10803, 15235, 15873, 18005, 26455, 30747, 39611, 45705, 51245, 54015, 79365, 112739, 118833, 133237, 153735, 198055, 338217, 399711, 563695, 594165, 666185, 1465607, 1691085, 1998555, 4396821, 7328035, 21984105]

約数ペア:

[(1, 21984105), (3, 7328035), (5, 4396821), (11, 1998555), (13, 1691085), (15, 1465607), (33, 666185), (37, 594165), (39, 563695), (55, 399711), (65, 338217), (111, 198055), (143, 153735), (165, 133237), (185, 118833), (195, 112739), (277, 79365), (407, 54015), (429, 51245), (481, 45705), (555, 39611), (715, 30747), (831, 26455), (1221, 18005), (1385, 15873), (1443, 15235), (2035, 10803), (2145, 10249), (2405, 9141), (3047, 7215), (3601, 6105), (4155, 5291)]