205909209

素因数分解:

$3^5\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 348566400

約数和(自身を除く): 142657191

約数列:

[1, 3, 9, 11, 27, 33, 47, 81, 99, 121, 141, 149, 243, 297, 363, 423, 447, 517, 891, 1089, 1269, 1341, 1551, 1639, 2673, 3267, 3807, 4023, 4653, 4917, 5687, 7003, 9801, 11421, 12069, 13959, 14751, 17061, 18029, 21009, 29403, 36207, 41877, 44253, 51183, 54087, 63027, 77033, 125631, 132759, 153549, 162261, 189081, 231099, 398277, 460647, 486783, 567243, 693297, 847363, 1381941, 1460349, 1701729, 2079891, 2542089, 4381047, 6239673, 7626267, 18719019, 22878801, 68636403, 205909209]

約数ペア:

[(1, 205909209), (3, 68636403), (9, 22878801), (11, 18719019), (27, 7626267), (33, 6239673), (47, 4381047), (81, 2542089), (99, 2079891), (121, 1701729), (141, 1460349), (149, 1381941), (243, 847363), (297, 693297), (363, 567243), (423, 486783), (447, 460647), (517, 398277), (891, 231099), (1089, 189081), (1269, 162261), (1341, 153549), (1551, 132759), (1639, 125631), (2673, 77033), (3267, 63027), (3807, 54087), (4023, 51183), (4653, 44253), (4917, 41877), (5687, 36207), (7003, 29403), (9801, 21009), (11421, 18029), (12069, 17061), (13959, 14751)]