8621991

素因数分解:

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

素因数の和:63

約数の個数: 48

約数和(自身を含む): 15686400

約数和(自身を除く): 7064409

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 133, 147, 171, 189, 343, 399, 441, 513, 931, 1029, 1197, 1323, 2401, 2793, 3087, 3591, 6517, 7203, 8379, 9261, 16807, 19551, 21609, 25137, 45619, 50421, 58653, 64827, 136857, 151263, 175959, 319333, 410571, 453789, 957999, 1231713, 2873997, 8621991]

約数ペア:

[(1, 8621991), (3, 2873997), (7, 1231713), (9, 957999), (19, 453789), (21, 410571), (27, 319333), (49, 175959), (57, 151263), (63, 136857), (133, 64827), (147, 58653), (171, 50421), (189, 45619), (343, 25137), (399, 21609), (441, 19551), (513, 16807), (931, 9261), (1029, 8379), (1197, 7203), (1323, 6517), (2401, 3591), (2793, 3087)]