31971775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 47318400

約数和(自身を除く): 15346625

約数列:

[1, 5, 11, 19, 25, 29, 55, 95, 145, 209, 211, 275, 319, 475, 551, 725, 1045, 1055, 1595, 2321, 2755, 4009, 5225, 5275, 6061, 6119, 7975, 11605, 13775, 20045, 30305, 30595, 44099, 58025, 67309, 100225, 116261, 151525, 152975, 220495, 336545, 581305, 1102475, 1278871, 1682725, 2906525, 6394355, 31971775]

約数ペア:

[(1, 31971775), (5, 6394355), (11, 2906525), (19, 1682725), (25, 1278871), (29, 1102475), (55, 581305), (95, 336545), (145, 220495), (209, 152975), (211, 151525), (275, 116261), (319, 100225), (475, 67309), (551, 58025), (725, 44099), (1045, 30595), (1055, 30305), (1595, 20045), (2321, 13775), (2755, 11605), (4009, 7975), (5225, 6119), (5275, 6061)]