31899217

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 40273920

約数和(自身を除く): 8374703

約数列:

[1, 7, 29, 31, 37, 137, 203, 217, 259, 899, 959, 1073, 1147, 3973, 4247, 5069, 6293, 7511, 8029, 27811, 29729, 33263, 35483, 123163, 147001, 157139, 232841, 862141, 1029007, 1099973, 4557031, 31899217]

約数ペア:

[(1, 31899217), (7, 4557031), (29, 1099973), (31, 1029007), (37, 862141), (137, 232841), (203, 157139), (217, 147001), (259, 123163), (899, 35483), (959, 33263), (1073, 29729), (1147, 27811), (3973, 8029), (4247, 7511), (5069, 6293)]