31639251

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 52005888

約数和(自身を除く): 20366637

約数列:

[1, 3, 7, 21, 31, 49, 53, 93, 131, 147, 159, 217, 371, 393, 651, 917, 1113, 1519, 1643, 2597, 2751, 4061, 4557, 4929, 6419, 6943, 7791, 11501, 12183, 19257, 20829, 28427, 34503, 48601, 80507, 85281, 145803, 198989, 215233, 241521, 340207, 596967, 645699, 1020621, 1506631, 4519893, 10546417, 31639251]

約数ペア:

[(1, 31639251), (3, 10546417), (7, 4519893), (21, 1506631), (31, 1020621), (49, 645699), (53, 596967), (93, 340207), (131, 241521), (147, 215233), (159, 198989), (217, 145803), (371, 85281), (393, 80507), (651, 48601), (917, 34503), (1113, 28427), (1519, 20829), (1643, 19257), (2597, 12183), (2751, 11501), (4061, 7791), (4557, 6943), (4929, 6419)]