21090636

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{659}}^1$

素因数の和:803

約数の個数: 72

約数和(自身を含む): 61501440

約数和(自身を除く): 40410804

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 127, 252, 254, 381, 508, 659, 762, 889, 1143, 1318, 1524, 1778, 1977, 2286, 2636, 2667, 3556, 3954, 4572, 4613, 5334, 5931, 7908, 8001, 9226, 10668, 11862, 13839, 16002, 18452, 23724, 27678, 32004, 41517, 55356, 83034, 83693, 166068, 167386, 251079, 334772, 502158, 585851, 753237, 1004316, 1171702, 1506474, 1757553, 2343404, 3012948, 3515106, 5272659, 7030212, 10545318, 21090636]

約数ペア:

[(1, 21090636), (2, 10545318), (3, 7030212), (4, 5272659), (6, 3515106), (7, 3012948), (9, 2343404), (12, 1757553), (14, 1506474), (18, 1171702), (21, 1004316), (28, 753237), (36, 585851), (42, 502158), (63, 334772), (84, 251079), (126, 167386), (127, 166068), (252, 83693), (254, 83034), (381, 55356), (508, 41517), (659, 32004), (762, 27678), (889, 23724), (1143, 18452), (1318, 16002), (1524, 13839), (1778, 11862), (1977, 10668), (2286, 9226), (2636, 8001), (2667, 7908), (3556, 5931), (3954, 5334), (4572, 4613)]