31389197

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 39640320

約数和(自身を除く): 8251123

約数列:

[1, 7, 19, 53, 61, 73, 133, 371, 427, 511, 1007, 1159, 1387, 3233, 3869, 4453, 7049, 8113, 9709, 22631, 27083, 31171, 61427, 73511, 84607, 236009, 429989, 514577, 592249, 1652063, 4484171, 31389197]

約数ペア:

[(1, 31389197), (7, 4484171), (19, 1652063), (53, 592249), (61, 514577), (73, 429989), (133, 236009), (371, 84607), (427, 73511), (511, 61427), (1007, 31171), (1159, 27083), (1387, 22631), (3233, 9709), (3869, 8113), (4453, 7049)]