21650715

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 39207168

約数和(自身を除く): 17556453

約数列:

[1, 3, 5, 9, 15, 43, 45, 67, 129, 167, 201, 215, 335, 387, 501, 603, 645, 835, 1005, 1503, 1935, 2505, 2881, 3015, 7181, 7515, 8643, 11189, 14405, 21543, 25929, 33567, 35905, 43215, 55945, 64629, 100701, 107715, 129645, 167835, 323145, 481127, 503505, 1443381, 2405635, 4330143, 7216905, 21650715]

約数ペア:

[(1, 21650715), (3, 7216905), (5, 4330143), (9, 2405635), (15, 1443381), (43, 503505), (45, 481127), (67, 323145), (129, 167835), (167, 129645), (201, 107715), (215, 100701), (335, 64629), (387, 55945), (501, 43215), (603, 35905), (645, 33567), (835, 25929), (1005, 21543), (1503, 14405), (1935, 11189), (2505, 8643), (2881, 7515), (3015, 7181)]