217127379

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 366774480

約数和(自身を除く): 149647101

約数列:

[1, 3, 7, 21, 29, 31, 49, 53, 87, 93, 147, 159, 203, 217, 371, 609, 651, 899, 961, 1113, 1421, 1519, 1537, 1643, 2597, 2697, 2883, 4263, 4557, 4611, 4929, 6293, 6727, 7791, 10759, 11501, 18879, 20181, 27869, 32277, 34503, 44051, 47089, 47647, 50933, 75313, 80507, 83607, 132153, 141267, 142941, 152799, 195083, 225939, 241521, 333529, 356531, 585249, 1000587, 1069593, 1365581, 1477057, 2334703, 2495717, 4096743, 4431171, 7004109, 7487151, 10339399, 31018197, 72375793, 217127379]

約数ペア:

[(1, 217127379), (3, 72375793), (7, 31018197), (21, 10339399), (29, 7487151), (31, 7004109), (49, 4431171), (53, 4096743), (87, 2495717), (93, 2334703), (147, 1477057), (159, 1365581), (203, 1069593), (217, 1000587), (371, 585249), (609, 356531), (651, 333529), (899, 241521), (961, 225939), (1113, 195083), (1421, 152799), (1519, 142941), (1537, 141267), (1643, 132153), (2597, 83607), (2697, 80507), (2883, 75313), (4263, 50933), (4557, 47647), (4611, 47089), (4929, 44051), (6293, 34503), (6727, 32277), (7791, 27869), (10759, 20181), (11501, 18879)]