31907187

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 52835328

約数和(自身を除く): 20928141

約数列:

[1, 3, 9, 13, 23, 39, 69, 71, 117, 167, 207, 213, 299, 501, 639, 897, 923, 1503, 1633, 2171, 2691, 2769, 3841, 4899, 6513, 8307, 11523, 11857, 14697, 19539, 21229, 34569, 35571, 49933, 63687, 106713, 149799, 154141, 191061, 272711, 449397, 462423, 818133, 1387269, 2454399, 3545243, 10635729, 31907187]

約数ペア:

[(1, 31907187), (3, 10635729), (9, 3545243), (13, 2454399), (23, 1387269), (39, 818133), (69, 462423), (71, 449397), (117, 272711), (167, 191061), (207, 154141), (213, 149799), (299, 106713), (501, 63687), (639, 49933), (897, 35571), (923, 34569), (1503, 21229), (1633, 19539), (2171, 14697), (2691, 11857), (2769, 11523), (3841, 8307), (4899, 6513)]