21959685

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 43363320

約数和(自身を除く): 21403635

約数列:

[1, 3, 5, 9, 11, 15, 33, 37, 45, 55, 99, 109, 111, 121, 165, 185, 327, 333, 363, 407, 495, 545, 555, 605, 981, 1089, 1199, 1221, 1635, 1665, 1815, 2035, 3597, 3663, 4033, 4477, 4905, 5445, 5995, 6105, 10791, 12099, 13189, 13431, 17985, 18315, 20165, 22385, 36297, 39567, 40293, 44363, 53955, 60495, 65945, 67155, 118701, 133089, 181485, 197835, 201465, 221815, 399267, 487993, 593505, 665445, 1463979, 1996335, 2439965, 4391937, 7319895, 21959685]

約数ペア:

[(1, 21959685), (3, 7319895), (5, 4391937), (9, 2439965), (11, 1996335), (15, 1463979), (33, 665445), (37, 593505), (45, 487993), (55, 399267), (99, 221815), (109, 201465), (111, 197835), (121, 181485), (165, 133089), (185, 118701), (327, 67155), (333, 65945), (363, 60495), (407, 53955), (495, 44363), (545, 40293), (555, 39567), (605, 36297), (981, 22385), (1089, 20165), (1199, 18315), (1221, 17985), (1635, 13431), (1665, 13189), (1815, 12099), (2035, 10791), (3597, 6105), (3663, 5995), (4033, 5445), (4477, 4905)]