20338185

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 64

約数和(自身を含む): 39168000

約数和(自身を除く): 18829815

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 59, 67, 105, 147, 177, 201, 245, 295, 335, 343, 413, 469, 735, 885, 1005, 1029, 1239, 1407, 1715, 2065, 2345, 2891, 3283, 3953, 5145, 6195, 7035, 8673, 9849, 11859, 14455, 16415, 19765, 20237, 22981, 27671, 43365, 49245, 59295, 60711, 68943, 83013, 101185, 114905, 138355, 193697, 303555, 344715, 415065, 581091, 968485, 1355879, 2905455, 4067637, 6779395, 20338185]

約数ペア:

[(1, 20338185), (3, 6779395), (5, 4067637), (7, 2905455), (15, 1355879), (21, 968485), (35, 581091), (49, 415065), (59, 344715), (67, 303555), (105, 193697), (147, 138355), (177, 114905), (201, 101185), (245, 83013), (295, 68943), (335, 60711), (343, 59295), (413, 49245), (469, 43365), (735, 27671), (885, 22981), (1005, 20237), (1029, 19765), (1239, 16415), (1407, 14455), (1715, 11859), (2065, 9849), (2345, 8673), (2891, 7035), (3283, 6195), (3953, 5145)]