31123197

素因数分解:

$3^7\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 56678400

約数和(自身を除く): 25555203

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 107, 133, 171, 189, 243, 321, 399, 513, 567, 729, 749, 963, 1197, 1539, 1701, 2033, 2187, 2247, 2889, 3591, 4617, 5103, 6099, 6741, 8667, 10773, 13851, 14231, 15309, 18297, 20223, 26001, 32319, 41553, 42693, 54891, 60669, 78003, 96957, 128079, 164673, 182007, 234009, 290871, 384237, 494019, 546021, 1152711, 1482057, 1638063, 3458133, 4446171, 10374399, 31123197]

約数ペア:

[(1, 31123197), (3, 10374399), (7, 4446171), (9, 3458133), (19, 1638063), (21, 1482057), (27, 1152711), (57, 546021), (63, 494019), (81, 384237), (107, 290871), (133, 234009), (171, 182007), (189, 164673), (243, 128079), (321, 96957), (399, 78003), (513, 60669), (567, 54891), (729, 42693), (749, 41553), (963, 32319), (1197, 26001), (1539, 20223), (1701, 18297), (2033, 15309), (2187, 14231), (2247, 13851), (2889, 10773), (3591, 8667), (4617, 6741), (5103, 6099)]